Isaiah 49:4
“Then I said, I have laboured in vain, I have spent my strength for nought, and in vain: yet surely my judgment is with the Lord, and my work with my God.”
And he hath made my mouth like a sharp sword; in the shadow of his hand hath he hid me, and made me a polished shaft; in his quiver hath he hid me;
And said unto me, Thou art my servant, O Israel, in whom I will be glorified.
Then I said, I have laboured in vain, I have spent my strength for nought, and in vain: yet surely my judgment is with the Lord, and my work with my God.
And now, saith the Lord that formed me from the womb to be his servant, to bring Jacob again to him, Though Israel be not gathered, yet shall I be glorious in the eyes of the Lord, and my God shall be my strength.
And he said, It is a light thing that thou shouldest be my servant to raise up the tribes of Jacob, and to restore the preserved of Israel: I will also give thee for a light to the Gentiles, that thou mayest be my salvation unto the end of the earth.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“Behold, the Lord hath proclaimed unto the end of the world, Say ye to the daughter of Zion, Behold, thy salvation cometh; behold, his reward is with him, and his work before him.”
“Behold, the Lord God will come with strong hand, and his arm shall rule for him: behold, his reward is with him, and his work before him.”
“And he that sent me is with me: the Father hath not left me alone; for I do always those things that please him.”
“I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.”
“Many seek the ruler’s favour; but every man’s judgment cometh from the Lord.”