1 Corinthians 15:10
But by the grace of God I am what I am, and that grace of his, bestowed upon me, did not prove ineffectual. I labored more abundantly than all the rest, yet not I, but by the grace of God that is with me.
1 Corinthians 15:58
So, my brothers beloved, stand firm, immovable, always abounding in work for the Lord, because you know that your toil is not fruitless in the Lord.
Galatians 6:9
And let us not be weary in well-doing, for in due season we shall reap if we faint not.
Colossians 1:29
For that end I am ever toiling, wrestling with all that energy of his which is mightily at work within me.