1 Corinthians 15:10

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

1 Corinthians 15:58

Therefore, my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord, since ye know that your labor is not in vain in the Lord.

Galatians 6:9

And let us not be fainthearted in welldoing; for in due season we shall reap, if we faint not.

Colossians 1:29

to which end I also am laboring, striving earnestly through his working, which worketh within 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 which was bestowed upon me was not in vain, but I labored more abundantly than they all; yet not I, but the grace of God which was with me.
Galatians 6:9
And let us not be fainthearted in welldoing; for in due season we shall reap, if we faint not.
Colossians 1:29
to which end I also am laboring, striving earnestly through his working, which worketh within me mightily.

General references

1 Corinthians 12:21
And the eye cannot say to the hand, I have no need of thee; nor, again, the head to the feet, I have no need of you.
1 Corinthians 14:8
For if the trumpet give an uncertain sound, who will prepare himself for the battle?