Then I said, I have labored in vain, I have spent my strength for nothing, and in vain: yet surely my judgment is with the LORD, and my work with my God.
Therefore, my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord, for you know that your labor is not in vain in the Lord.
And I went up by revelation, and communicated to them that gospel which I preach among the Gentiles, but privately to those who were of good reputation, lest by any means I should run, or had run, in vain.
For this reason, when I could no longer endure it, I sent to know your faith, lest by some means the tempter had tempted you, and our labor was in vain.