Adam Clarke on 1 Corinthians 4:19

But I will come to you shortly - God being my helper, I fully purpose to visit you; and then I shall put those proud men to the proof, not of their speech - eloquence, or pretensions to great knowledge and influence, but of their power - the authority they profess to have from God, and the evidences of that authority in the works they have performed. See the Introduction, Section 11.