“Look, I am sending you out as sheep in the midst of wolves. Therefore be wise as serpents and harmless as doves.” Matthew 10.16
The prudent sheep are those who look and listen only to their shepherd, and humbly follow him on the path. He never wants to exalt himself or stand out from the other sheep. So is the servant of the Lord Jesus. He hears His Voice and follows Him all the way, in fear and with simplicity.