If you want to enter in to the kingdom of God, the first thing to do is to find out how to enter in.  Jesus Christ told apostle Peter  in Matt.16:19 ‘I will give you the keys of the kingdom of heaven: and whatsoever you shall bind on earth shall be bound in heaven: and whatsoever you shall loose on earth shall be loosed in heaven’.
Obtaining the keys makes you to enter in to all that God has prepared for you. On the contrary, if you do not have the keys, then your labour becomes the labour of the foolish who weary themselves to find the way into thje city(Eccl.10:15)( the city here meaning the kingdom or all God’s prepared provision for you.) Do you know that God foreknew you before the beginning of the world(Jer. 1:5; Ps.139:15,16) and has made a provision for you saying this is my path for you. You need to find God’s purpose for your life today. Stop beating about the bush. His thoughts concerning you are awesome. God bless you.
The first key is the  Salvation key. Without using this key to enter into a relationship with God, there is no reference point to your claim with God. Mark 16:16-‘He that believes and is baptised shall be saved but he that does not believe shall be damned’. This salvation key is broken into two parts; one the believing aspect and secondly the water baptism aspect. We shall look at these two keys as they present the basis for a true relationship and entry point to the kingdom.

The Believing Key
Believing here talks about believing the gospel message which basically is that ‘All have sinned and come short of the glory of God (Rom.3:23)and the wages of that sin is death(Rom.6:23) but Jesus Christ has died for our sins thereby suffering the curse of sin that was placed upon us and justifying us freely(Rom.6:24,25; John3:16) and that anyone who repents of his sins  and is baptised in the name of Jesus Christ shall be saved (Acts.2:38).  So, the believing key is simply believing that he must  repent and be baptised in the name of Jesus Christ to be saved. So the  response of the sinner here becomes to repent and be baptised in the name of Jesus Christ.
Repen­tance key
mental belief in the person of Jesus is not enough because even the devil believes in the person of Jesus and trembles but he does not repent or give his life to Jesus(, it takes true repentance to work the salvation key as presented in Acts.2:38!  Jesus himself said unless you repent ye shall likewise perish! (Luke 13:3). Repentance is godly sorrow for your sins and turning away from the evil and doing the right. This must be done first before water baptism or else it becomes a fluke. If you baptize without repentance you are doing a great damage to yourself.
The key of water Baptism
As mentioned in Acts 2:38, water baptism must be done in the name of Jesus Christ. Baptism is not sprinkling with water, it is immersion into water showing a burial(Rom.6:4).
Water baptism always becomes an issue at critical junctions of time. We are at such a junction of time today. In the exodus of the Israelites from Egypt, they had to be baptized in the red sea. In the coming of John the Baptist, they had to baptize for repentance. When Jesus Christ came, they had to rebaptise again for the remission of sins. We are about to go in the translation and you had better get it right.(see Acts 19:1-6 about those who had to get it right). There is no middle ground. You just must get it right now. THAT IS MY JOB TO TELL YOU!
History has it that every person ever baptized by the apostles in the Bible and baptisms conducted up to  three hundred years after Jesus was crucified and risen, was done in the Name of Jesus Christ. Not one apostle, not one Christian, at any time ever used the the titles “Father, Son, Holy Ghost” as NAME for baptism until the Catholic church was organized at the Nicene Council.Original and correct key of water baptism is in the name of Jesus Christ

The Truth On Water Baptism
Matthew 28:19 said “Go ye therefore, teach all nations, baptizing them in the Name,” not in the names, in the Name, singular of… Not in the name of the Father, name of the Son, name of the Holy Ghost, but in the Name of Father, Son, and Holy Ghost. Father is not a name; Son is not a name; Holy Ghost is not a name. They’re titles that belong to a Name.
After Pentecost (Acts 2:38),  Peter said, “Repent, every one of you and be baptized in the Name of the Lord Jesus Christ.”  See! Father, Son, and Holy Ghost are titles of the same God( the Lord Jesus Christ) The extreme Trinitarian idea  tries to make three gods out of that. Father, Son, and Holy Ghost  are not three gods or personalities.
Father, Son, and Holy Ghost are titles of the workings  of one God. He is our Father; He came in human form as a  Son to take away our sins; He is the Holy Spirit indwelling us. It’s three workings of the same God and his name is the Lord Jesus Christ. Lord means owner, father above. Jesus means Jehovah our Saviour and Christ means the anointing. Do you know he has many more names. After His workings you can call Him. He is the Lion of Judah, the way maker, the provider, our peace etc.
The original Greek  and  the Hebrew say, that the baptism in the Name of Jesus is for the cancellation of sins, both Greek and Hebrew talk of remission of sins(Acts 2;38).  “Remit” means, “to cancel,” of course. If I remit anything, is to take it away as if I never done it.” This is the key that is very well overlooked. If it is remitted it must be done in the name of Jesus.(Read these scriptures carefully for full understanding of the effect of water baptism-Rom.6:3-11.
And Paul the apostle passed through and found some Baptist brethren, Acts 19:1-7.
Paul asked them, “Have ye received the Holy Ghost since you have believed?”And they said, “We know not whether there be any Holy Ghost.” He said, “How were you baptized?” In the King James it says “unto what”; in the original it said “ how.” “What way or how were you baptized?”
They said they had been baptized by the same man that baptized Jesus, John.  Paul told them that baptism will not  work any more. They had to  be baptized over again. And when they heard this, they come back into the water and were  rebaptized in the Name of Jesus Christ. Paul laid his hands upon them, and the Holy Spirit came on them.  If you are reading this message, you would have realized by now that there are dispensations of grace. The time of John had passed. John’s baptism assured of repentance( Acts 19:4)  but could not remit sins. Remission of sins is only in the name of Jesus Christ. If you have believed in the name of Jesus Christ, you must be baptized in that same name for your salvation. He that believeth and is baptized shall be saved(Mk 16:16). That is the key to salvation.  All that the believer does “in word or deed” is to be done in Jesus’ Name (Colossians 3:17)
…never was a person…in all the pages of the Bible, ever baptized in the titles of the “Father, Son, Holy Ghost.” There never was a person baptized in the titles of the “Father, Son, Holy Ghost” until the early Catholic church (came). It’s not in the Bible, nowhere!
 “…The LORD our God is One Lord” (Mark 12:29)
Directly associated with the understanding on water baptism is the truth about the Godhead. The churches “traditionally” believe in three separate or distinct persons in one God. This was the result of a misinterpretation of Scripture which mentions the deity of the Father, Son, and Holy Ghost incorporated in a Trinitarian definition at the fourth century meeting of the First Nicea Council.
Like the false so-called “baptismal formula,” this “new” concept (with the help of armed might,) swept Christendom, and over the centuries has become so embedded in Christian thought that to question its validity is tantamount to heresy.
The church lost the revelation that the one God, Jehovah, expressed Himself in the Old Testament as the Father, came in the Son, Jesus, and revealed Himself in the Book of Acts as the Holy Spirit. In reality, it is three workings of the same God – God above us – God with us – God in us, NOT three persons, but one glorious personage finally and wonderfully unveiled (Hebrews 1:3.)
The heathen intellectual minds of the theologians could not reconcile the appearance of the Son on earth to the Father remaining in heaven. They, forgetting that God can be in heaven whilst at the same time manifesting Himself on earth, (John 14:10,) decided there had to be at least two in the Godhead and the entrance of the Holy Spirit in Acts 2 made it three. They made the Son the second person of this Godhead, failing to realize that the Scriptures do not teach that Jesus is in the Godhead, rather that the Godhead is in Jesus. “For in Him dwelleth the fullness of the Godhead bodily” (Colossians 2:9.) They could only see that the Father was a God and the Son was a God and missed the true concept that the Father was God and the Son was the flesh or man in Whom that God dwelt to redeem Adam’s fallen race and was the beginning of the creation of God in the form of His Family, the New testament saints in whom he will dwell and be worshipped throughout eternity (Luke 1:35; I Timothy 3:16.)

The ensuing three-personned deity is every bit as much a form of idolatry as the various pagan gods people worship today.
Through the ages, Bible Truth became increasingly obscured by ignorance and superstition forced upon what was once the Empire of Imperial Rome by a new mistress, the Roman Catholic church. Such was her power, kings submitted to her outrageous demands, and laity were forbidden to read the Bible on pain of excommunication or death. By her own records, and history found in any encyclopedia she martyred over 68 million Christians during almost a thousand years of “Dark Ages” which ensued, many by unspeakable torture.
Because the faith was thus lost, God “winked” at the ignorance of the saints during the Church Ages provided they walked in the Light as He was restoring It. The ministry of the last angel was to fully restore the true understanding or faith (including the Godhead and water baptism) to the elect.
They didn’t believe in three Gods in the beginning of the church. You can’t find that sort of belief amongst the apostles. It was after the apostolic age that this theory came in and really became an issue and cardinal doctrine at the Nicene Council. The doctrine of the Godhead caused a two-way split at Nicea. And from that split there came two extremes. One actually went into polytheism, believing in three Gods, and the others went into Unitarianism. Of course, that was a little while in coming about, but it did, and we have it right today. But the revelation through John by the spirit to the churches was, ‘I am the Lord Jesus Christ, and I am ALL of It. There isn’t any other God.’ And He put His seal on the Revelation.
Consider this: Who was the Father of Jesus? Matthew 1:18 says, ‘She was found with child of the Holy Ghost.’ But Jesus Himself, claimed that God was His Father. God the Father and God the Holy Ghost, as we often express these terms, make the Father and the Spirit ONE. Indeed they are, or else Jesus had two Fathers. But notice that Jesus said that He and His Father were one – not two. That makes ONE God.
Since this is historically and Scripturally true, people wonder where the three came from. It became a foundational doctrine at the Nicene Council in AD 325. This trinity (an absolutely unscriptural word) was based upon the many gods of Rome. The Romans had many gods to whom they prayed. They also prayed to ancestors as mediators. It was just a step to give new names to old gods, so we have saints to make it more Biblical. Thus, instead of Jupiter, Venus, Mars, etc., we have Paul, Peter, Fatima, Christopher etc., etc. They could not make their pagan religion work out with just one god, so they split Him up into three, and they made intercessors of the saints as they had made intercessors of their ancestors.
Ever since then, people have failed to realize that there is one God according to Scripture, but they try to make it the fantastic theory that God is like a bunch of grapes: three persons with the same Divinity shared equally by all. But it plainly says here in Revelation that Jesus is “That Which Is,’ ‘That Which Was,’ and ‘That Which Is to Come,’ He is the ‘Alpha and Omega,” which means He is the “A to Z” of THE ALL OF IT. He is everything – the Almighty. He is the Rose of Sharon, the Lily of the Valley, the Bright and Morning Star, the Righteous Branch, the Father, the Son, and the Holy Ghost. He is God, Almighty God. ONE GOD.
I Timothy 3:16 says, ‘And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up unto Glory.’ This is what the Bible says. It doesn’t say a thing about a first or second or third person here. It says God was manifest in flesh. One God. That One God was manifested in flesh. That ought to settle it. God came in a human form. That didn’t make Him ANOTHER GOD. HE WAS GOD, THE SAME GOD. It was a revelation then, and it is a revelation now. One God (study these scriptures(John 1: 1, 14; Micah 5:2; I Timothy 3:16;  Hebrews 1:1-3), (Jeremiah 31:31-33, Romans 8:9;I Corinthians 12:13;Hebrews 10:29;Romans 8:9;John 14:17, 18, Acts 16:7, II Corinthians 3:17)