Treasury of Scripture Knowledge
And I applied my heart to seek and to search out by wisdom concerning all that is done under heaven. It is a great tribulation that God has given to the sons of men to be exercised therewith.
For to the man who pleases him [God] gives wisdom and knowledge and joy, but to the sinner he gives travail, to gather and to heap up, that he may give to him who pleases God. This also is vanity and a striving after wind.
In the sweat of thy face thou shall eat bread, till thou return to the ground, for out of it thou were taken. For thou are dust, and to dust thou shall return.
1 Thessalonians 2:9
For ye remember, brothers, our labor and the hardship. For, laboring night and day in order not to burden any of you, we preached to you the good-news of God.
2 Thessalonians 3:8
nor did we eat bread gratis from any man, but in labor and toil, working night and day in order not to burden any of you.