THE LORD SAID TO JONAH, 'UP! GO TO NINEVEH, PREACH TO THEM ALL I TOLD YOU TO.'
After John was arrested Jesus went into Galilee & proclaimed the Good News from God: 'The kingdom of God is close at hand! Repent, & believe the Good News.'
Live the Word, &, when opportune, proclaim It as well. Don't have to 'preach' or identify it explicitly, just formulate in your own words & way the truths about God It reveals.
Prayer is rubbing elbows with Jesus & the saints in the Kingdom of God, 'close at hand' as it is here & now. Prayer, as such, is outside of time, putting us in contact with God & his eternal decrees.