Thirsting Souls Bible Teaching

(2Co 13:6) “But I trust that ye shall know that we are not reprobates.”  Since the proof that one is not “reprobate” is “Jesus Christ….in you” (v.5), then the evidence of such has already been given: (2Co 12:12)  “Truly the signs of an apostle were wrought among you in all patience, in signs, and wonders, and mighty deeds.”  I wonder what the sign is that Jesus Christ is in  you?