Matthew 10:16-20

Behold, I send you forth as sheep in the midst of wolves: be ye therefore wise as serpents, and harmless as doves. But beware of men: for they will deliver you up to councils, and in their synagogues they will scourge you; yea and before governors and kings shall ye be brought for my sake, for a testimony to them and to the Gentiles. But when they deliver you up, be not anxious how or what ye shall speak: for it shall be given you in that hour what ye shall speak. For it is not ye that speak, but the Spirit of your Father that speaketh in you.