'Preaching' in the Bible

Of this church I was made a minister according to the stewardship from God bestowed on me for your benefit, so that I might fully carry out the preaching of the word of God,

Whom we are preaching; guiding and teaching every man in all wisdom, so that every man may be complete in Christ;

And making prayer for us, that God may give us an open door for the preaching of the word, the secret of Christ, for which I am now in chains;