'Baptism' in the Bible

John came, and gave baptism in the waste land, preaching baptism as a sign of forgiveness of sin for those whose hearts were changed.

And there went out to him all the people of Judaea, and all those of Jerusalem, and they were given baptism by him in the river Jordan, saying that they were sinners.

I have given you baptism with water, but he will give you baptism with the Holy Spirit.

And it came about in those days, that Jesus came from Nazareth of Galilee, and was given baptism by John in the Jordan.

But Jesus said to them, You have no knowledge of what you are saying. Are you able to take of my cup? or to undergo the baptism which I am to undergo?

And they said to him, We are able. And Jesus said to them, You will take of the cup from which I take; and the baptism which I am about to undergo you will undergo:

The baptism of John, was it from heaven or from men? give me an answer.

He who has faith and is given baptism will get salvation; but he who has not faith will be judged.