'Preaching' 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.

Now after John had been put in prison, Jesus came into Galilee, preaching the good news of God,

And he went into their Synagogues in every part of Galilee, preaching and driving out evil spirits.

And they went out, preaching the need for a change of heart in men.

And they went out, preaching everywhere, the Lord working with them, and giving witness to the word by the signs which came after. So be it.