The answer is quite simple as to the purpose of water Baptism. Acts 2:38 states it emphatically which is supported by other scriptures. Simply put, it's for the remission of sins, and then upon being obedient, you then receive the gift of the Holy Ghost, the indwellingif tge Spirit, and are added to the body of Christ, becoming a child of God and a Christian (Acts 2:47).
Acts 2:37 (KJV) Now when they heard
this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men
and brethren, what shall we do?
Acts 2:38-41 (KJV) Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost. For the promise is unto you, and to your children, and to all that are afar off,
even as many as the Lord our God shall call. And with many other words did he testify and exhort, saying, Save yourselves from this untoward generation.
Then they that gladly received his word were baptized: and the same day there were added
unto them about three thousand souls.
Hebrews 10:22 (KJV) Let us draw near with a true heart in full assurance of faith, having
our hearts sprinkled from an evil conscience, and our bodies washed with pure water.
Water baptism is NOT how our guilty heart is cleansed. It is HEARING the Gospel of Christ that convicts the guilty heart, then repenting of our sins in the name of Jesus Christ whosoever gladly received His word being baptized in water have assurance of faith. Obedient faith without wavering being baptized in the name of Christ is outward evidence that we have come out of the kingdom of man, and entered the Kingdom of God through Christ's Spirit within us.
Hebrews 10:23-24 (KJV) Let us hold fast the profession of
our faith without wavering; (for he
is faithful that promised;) And let us consider one another to provoke unto love and to good works:
Being baptized in water is the sign Christ gave His people to set themselves apart from the nations of the world. In the same way God gave the Old Covenant nation of Israel the outward sign of circumcision that set the nation apart from the rest of the world. Neither baptism with water, nor circumcision can save us. We are eternally saved according to grace through faith in Christ ALONE! Whosoever hears and believes in Him HAVE eternal life and shall NEVER perish.
Hebrews 10:24-25 (KJV) Not forsaking the assembling of ourselves together, as the manner of some
is; but exhorting
one another: and so much the more, as ye see the day approaching.