1 Corinthians 15:10

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

1 Corinthians 15:58

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

Galatians 6:9

But let us not be weary of well doing; for in due season we shall reap, if we faint not.

Colossians 1:29

For which also I labour, striving according to his mighty working, who worketh in me mightily.

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 toward me was not in vain, but I laboured more abundantly than they all: yet not I, but the grace of God that was with me.
Galatians 6:9
But let us not be weary of well doing; for in due season we shall reap, if we faint not.
Colossians 1:29
For which also I labour, striving according to his mighty working, who worketh in me mightily.

General references

1 Corinthians 12:21
And the eye cannot 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
And if the trumpet give an uncertain sound, who will prepare himself for the battle?