Berean Standard Bible (BSB)
since you are demanding proof that Christ is speaking through me. He is not weak in dealing with you, but is powerful among you.
World English Bible (WEB)
seeing that you seek a proof of Christ who speaks in me; who toward you is not weak, but is powerful in you.
Strong's King James
Since{G1893} ye seek{G2212}{(G5719)} a proof{G1382} of Christ{G5547} speaking{G2980}{(G5723)} in{G1722} me{G1698}, which{G3739} to{G1519} you-ward{G5209} is{G770} not{G3756} weak{G770}{(G5719)}, but{G235} is mighty{G1414}{(G5719)} in{G1722} you{G5213}.
The F.O.G *
(3) Since you are seeking for proof of The Mashiach who speaks in me and who isn't weak towards you but rather powerful in you.
The F.O.G Message *
Young's Literal Translation
since a proof ye seek of the Christ speaking in me, who to you is not infirm, but is powerful in you,