In the midst of wolves

(Luke 10:1-3) "After these things the Lord appointed other seventy also, and sent them two and two before his face into every city and place, whither he himself would come.  {2} Therefore said he unto them, The harvest truly is great, but the labourers are few: pray ye therefore the Lord of the harvest, that he would send forth labourers into his harvest.  {3} Go your ways: behold, I send you forth as lambs among wolves."

(Matthew 10:16) "¶ Behold, I send you forth as sheep in the midst of wolves: be ye therefore wise as serpents, and harmless as doves."