Acts 2:38 And Peter said to them, Repent and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit. #Bible
It's so simple, one simply repents of their sins. Sins are our rebellion against God who says, for our own good, don't do that, and we do it anyway.
To repent is to stop doing what is called sin, turn from it and turn to God, and let Him lead you in a way that pleases Him.
Being baptized is to demonstrate to God, and mankind, that you have gone under the water, dying to this world. You are dead to this worlds way of doing things.
Coming up out of the water is to demonstrate you now live again to God, and His ways.
You have been born again to a new life with God through the sacrifice of Jesus the Christ dying for you on the cross paying the requirement for your sins.
Wonderfully then you receive the gift from God, the Holy Spirit, our Wonderful Companion for ever, our guide, our counselor, the One who communicates to God what we can't express, and so on. You have to read the Holy Bible to understand all He is to us.
Our Father God Loves us completely, He provides for us completely, He leaves nothing out, nor holds no good thing from us. He is our Wonderful Almighty God who even expresses Himself to us in three Persons, the Father the Son Jesus, and the Holy Spirit.
