Since ye seek a proof of Christ speaking in me, which to you-ward is not weak, but is mighty in you.
Berean Study Bible (BSB) - 2 Corinthians 13:3 >since you are demanding proof that Christ is speaking through me. He is not weak in dealing with you, but is powerful among you.
Textus Receptus (TR) - 2 Corinthians 13:3 >ἐπεὶ δοκιμὴν ζητεῖτε τοῦ ἐν ἐμοὶ λαλοῦντος Χριστοῦ, ὃς εἰς ὑμᾶς οὐκ ἀσθενεῖ, ἀλλὰ δυνατεῖ ἐν ὑμῖν·