'Man's' in the Bible

You yourselves are our letter, whose writing is in our heart, open for every man's reading and knowledge;

But have renounced the hidden things of dishonesty, not walking in craftiness, nor handling the word of God deceitfully; but by manifestation of the truth commending ourselves to every man's conscience in the sight of God.

for we walk by faith, not by sight [living our lives in a manner consistent with our confident belief in God’s promises]—

For we seek not only God's approval of our integrity, but man's also.

To preach the gospel in the regions beyond you, and not to boast in another man's line of things made ready to our hand.

On behalf of such a man [and his experiences] I will boast; but in my own behalf I will not boast, except in regard to my weaknesses.