(Isaiah 49) Clearly a reference

And now the Lord says, Who formed Me from the womb to be His Servant, to bring Jacob back to Him, so that Israel is gathered to Him. For I shall be glorious in the eyes of the Lord, and My God shall be My strength. Indeed He says, ‘It is too small a thing that You should be My Servant to raise up the tribes of Jacob, and to restore the preserved ones of Israel; I will also give You as a light to the Gentiles, that You should be My salvation to the ends of the earth.’

These verses are clearly a reference to Christ, the Servant of God, who is himself God.  As St. Bonaventure said, “Christ is the lamp that illumines the whole of Scripture”.