1 Corinthians 9:2

Verse 1 Corinthians 9:2. If I be not an apostle unto others] If there be other Churches which have been founded by other apostles; yet it is not so with you.

The seal of mine apostleship are ye] Your conversion to Christianity is God's seal to my apostleship. Had not God sent me, I could not have profited your souls.

The σφραγις or seal, was a figure cut in a stone, and that set in a ring, by which letters of credence and authority were stamped. The ancients, particularly the Greeks, excelled in this kind of engraving. The cabinets of the curious give ample proof of this; and the moderns contend in vain to rival the perfection of those ancient masters.

In the Lord.] The apostle shows that it was by the grace and influence of God alone that he was an apostle, and that they were converted to Christianity.