10 I saw the work which God has put on the sons of man.
Ecclesiastes 3:10 Cross References - BBE
Genesis 3:19
19 With the hard work of your hands you will get your bread till you go back to the earth from which you were taken: for dust you are and to the dust you will go back.
Ecclesiastes 1:13-14
Ecclesiastes 2:26
26 To the man with whom he is pleased, 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 in whom God has pleasure. This again is to no purpose and desire for wind.
1 Thessalonians 2:9
9 For you have the memory, my brothers, of our trouble and care; how, working night and day, so that we might not be a trouble to any of you, we gave you the good news of God.
2 Thessalonians 3:8
8 And we did not take food from any man for nothing, but were working hard night and day not to be a trouble to any of you: