I am sending you out
Into the midst of wolves.
So be wise
Ἰδοὺ ἐγὼ ἀποστέλλω ὑμᾶς ὡς πρόβατα ἐν μέσῳ λύκων· γίνεσθε οὖν φρόνιμοι ὡς οἱ ὄφεις καὶ ἀκέραιοι ὡς αἱ περιστεραί.
There is something similar in Luke, 10:3, perhaps indicating a Q source. This is another admonition to his apostles. Jesus was going to send them out (Ἰδοὺ ἐγὼ ἀποστέλλω ὑμᾶς) like sheep in the middle of wolves (ὡς πρόβατα ἐν μέσῳ λύκων). Thus, they had to be as wise, intelligent, shrewd, or sensible as serpents (γίνεσθε οὖν φρόνιμοι ὡς οἱ ὄφεις). They had to be as innocent, simple, unsophisticated, sincere, or blameless, as doves (καὶ ἀκέραιοι ὡς αἱ περιστεραί). This was a tall order with this dichotomous speech.