Matthew 10:16
"Remember it is I who am sending you out, as sheep into the midst of wolves; prove yourselves as sagacious as serpents, and as innocent as doves.
Romans 16:19
Your fidelity to the truth is everywhere known. I rejoice over you, therefore, but I wish you to be wise as to what is good, and simple-minded as to what is evil.
1 Corinthians 14:20
Brethren, do not prove yourselves to be children in your minds. As regards evil, indeed, be utter babes, but as regards your minds prove yourselves to be men of ripe years.
Ephesians 5:17
On this account do not prove yourselves wanting in sense, but try to understand what the Lord's will is.