Ecclesiastes 3:10

I have seen the travail, which God hath given to the sons of men to be exercised in it.

Genesis 3:19

In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it wast thou taken: for dust thou {art}, and unto dust shalt thou return.

Ecclesiastes 8:16-17

When I applied mine heart to know wisdom, and to see the business that is done upon the earth: (for also {there is that} neither day nor night seeth sleep with his eyes:)

1 Timothy 4:15

Meditate upon these things; give thyself wholly to them; that thy profiting may appear to all. {to all: or, in all things}

Ecclesiastes 1:17

And I gave my heart to know wisdom, and to know madness and folly: I perceived that this also is vexation of spirit.

Ecclesiastes 12:12

And further, by these, my son, be admonished: of making many books {there is} no end; and much study {is} a weariness of the flesh. {study: or, reading}

Ecclesiastes 7:25

I applied mine heart to know, and to search, and to seek out wisdom, and the reason {of things}, and to know the wickedness of folly, even of foolishness {and} madness: {I applied...: Heb. I and mine heart compassed}

Ecclesiastes 2:26

For {God} giveth to a man that {is} good in his sight wisdom, and knowledge, and joy: but to the sinner he giveth travail, to gather and to heap up, that he may give to {him that is} good before God. This also {is} vanity and vexation of spirit. {in his...: Heb. before him}