Ecclesiastes 3:10
I have seen the task that God has given with which the sons of men are occupied.
Genesis 3:19
You will eat your food by the sweat of your brow until you return to the ground. You came from the ground. For dust you are and to dust you will return.
Ecclesiastes 2:26
To the man who is good, God gives wisdom and knowledge and joy. But to the sinner he gives the work of getting goods together and storing up wealth, to give to him who is good before God. This also is vanity and grasping for the wind.
Ecclesiastes 1:13-14
I devoted myself to study and explored wisdom concerning all that is done under the heavens. It is a grievous task God has given to the sons of men to be afflicted with.
1 Thessalonians 2:9
You may remember, brothers, our labor and hardship. We worked day and night that we would not burden any of you when we preached the good news of God to you.
2 Thessalonians 3:8
We did not eat anyone's food without paying for it. Instead, we worked hard and struggled night and day in order not to be a burden to any of you.