John 3:34 (NIV)
34For the one whom God has sent speaks the words of God, for God gives the Spirit without limit.
2 Timothy 4:2 (NIV)
2Preach the Word; be prepared in season and out of season; correct, rebuke and encourage–with great patience and careful instruction.
John 16:33 (NIV)
33“I have told you these things, so that in me you may have peace. In this world you will have trouble. But take heart! I have overcome the world.”