He — The Lord. It is — This is but a small favour. The tribes — That remnant of them which shall survive all their calamities. My salvation — The great instrument and author of that eternal salvation which I will give to the Gentiles.
Related Commentaries of Isaiah 49:6
Isaiah 49:6
6 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.