1 Corinthians 15:10

But by the grace of God I am what I am: and his grace which was given to me was not in vain; but I laboured more abundantly than they all; yet not I, but the grace of God which was with me.

1 Corinthians 15:58

Wherefore, my beloved brethren, be stedfast, unmoveable, always abounding in the work of the Lord, knowing that your labour is not in vain in the Lord.

Galatians 6:9

Let us not then be weary of well-doing; for in due time we shall reap, if we faint not.

Colossians 1:29

for which also I am labouring, conflicting in the energy of his might, which worketh in me powerfully.

Treasury of Scripture Knowledge

Summary

So we laboured in the work: and half of them held the spears from the rising of the morning till the stars appeared.

Bible References

So we

1 Corinthians 15:10
But by the grace of God I am what I am: and his grace which was given to me was not in vain; but I laboured more abundantly than they all; yet not I, but the grace of God which was with me.
Galatians 6:9
Let us not then be weary of well-doing; for in due time we shall reap, if we faint not.
Colossians 1:29
for which also I am labouring, conflicting in the energy of his might, which worketh in me powerfully.

General references

1 Corinthians 12:21
Nor can the eye say to the hand, I have no need of thee: or again the head to the feet, I have no need of you.
1 Corinthians 14:8
For if the trumpet also give an uncertain sound, who will prepare himself for the battle?