Acts 2:29-36. After quoting David that God would not allow His Holy One to see corruption, Peter continues his speech to the Jews gathered before him at the first Pentecost. He says we know that David died and was buried. Therefore, David was speaking as a prophet when he said that God would not allow His Holy One to be abandoned to Hades nor to see corruption. God had promised David that one of his line would sit on His throne, and David was foreseeing that that descendant would be the one to sit at the Lord's right hand in Heaven. David was foreseeing Jesus Christ, and Peter ties it all together for these Jews, attesting to the fact that Jesus Christ rose from the dead after having been crucified by these same men. "Let all the house of Israel therefore know assuredly that God has made him both Lord and Christ, this Jesus whom you crucified."

David was priest, prophet, and king, as are we all by virtue of our baptism. God needs prophets, and calls on us to that task at times. Speaking his words can feel awkward and can make us less accepted (especially if we are not an actual king like David!), but we must do it anyway. We may not fully understand our words or what they are foretelling, and sometimes we can come off as self-aggrandizing or arrogant (many people probably thought David was arrogantly speaking of himself when he said these things, and after his death I'm sure some people thought he was proved wrong), but that, too, is something we must accept in service of God's words.

We must willingly give ourselves over to any task that God gives us, including prophecy, even if it costs us, and often it does.