The Bible says Jesus is God in the flesh. Read 1 Timothy 3 verse 16 KJV that says: “…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 into glory.” In Luke 7 verses 48-49 (KJV) we read “And he said unto her, Thy sins are forgiven. And they that sat at meat with him began to say within themselves, Who is this that forgiveth sins also?” So we know only God can forgive our sins and Jesus forgave the sins of those he met while he was on Earth because he is God seen in human flesh. God is One God (not 3 persons in one) from the Old Testament to the New Testament. The Bible says in the Book of Isaiah 43 verse 10 (KJV) “Ye are my witnesses, saith the Lord, and my servant whom I have chosen: that ye may know and believe me, and understand that I am he: before me there was no God formed, neither shall there be after me.”
How to be saved from sins and received Eternal Life was taught, preached and practiced by the Apostles at Acts 2 verse 38 when Peter said: “…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.” So Peter knew what Jesus meant when Jesus spoke the words at Matthew 28 verse 19 and commanded the Apostles. The name from “in the name of” is Jesus Christ. And no where in the Bible was anyone baptized according to Matthew 28 verse 19 as mentioned. Why? Because Peter knew the correct understanding of that is Acts 2 verse 38 and many people in the Bible were baptized that way. Read also Acts 2 verse 36, Acts 8 verse 16, Acts 10 verse 48 and Acts 19 verse 5 in the Bible. And there is no infant baptism recorded or taught in the New Testament. Jesus and the Bible also said we must be born of water and the Spirit to receive Salvation and Eternal Life from John 3 verse 5 in the Bible. So were are to seek and receive the Holy Ghost (Holy Spirit) to be chosen Saints of God Almighty. Read Romans 8 verse 9 in the Bible.