Parallel
2 Corinthians 13:3
Nestle 1904 Greek New Testament · Berean Standard Bible
ἐπεὶ δοκιμὴν ζητεῖτε τοῦ ἐν ἐμοὶ λαλοῦντος Χριστοῦ ὃς εἰς ὑμᾶς οὐκ ἀσθενεῖ ἀλλὰ δυνατεῖ ἐν ὑμῖν
since you are demanding proof that Christ is speaking through me. He is not weak in dealing with you but is powerful among you.