Isaiah 49
4 Ref And I said, I have undergone weariness for nothing, I have given my strength for no purpose or profit: but still the Lord will take up my cause, and my God will give me my reward.
5 Ref And now, says the Lord, who made me his servant when I was still in my mother's body, so that I might make Jacob come back to him, and so that Israel might come together to him: and I was honoured in the eyes of the Lord, and my God became my strength.