Jesus gave a pep talk in Matthew 10:
Barnes explained:
Not by being innocent.
What was so wise about serpents? What was this positive imagery about snakes?16 Behold, I am sending you out as sheep in the midst of wolves, so be wise as serpents and innocent as doves. 17a Be on your guard.
Barnes explained:
How do snakes survive in this cruel world?sheep in the midst of wolves - That is, I send you, inoffensive and harmless, into a cold, unfriendly, and cruel world. Your innocence will not be a protection.
Not by being innocent.
Be cautious, like a snake. Don't innocently head into trouble situations.Be wise as serpents ... - Serpents have always been an emblem of wisdom and cunning, Genesis 3:1. The Egyptians used the serpent in their hieroglyphics as a symbol of wisdom. Probably the thing in which Christ directed his followers to imitate the serpent was in its caution in avoiding danger.
Jesus used snakes as positive imagery. Don't be foolish. Don't go out there looking for trouble. Be wise. Be cautious, like a snake.No animal equals them in the rapidity and skill which they evince in escaping danger. So said Christ to his disciples, You need caution and wisdom in the midst of a world that will seek your lives. He directs them, also, to be harmless, not to provoke danger, not to do injury, and thus make their fellow-men justly enraged against them. Doves are, and always have been, a striking emblem of innocence. Most people would foolishly destroy a serpent, be it ever so harmless, yet few are so hard-hearted as to kill a dove.