And now the Lord says—
    he who formed me in the womb to be his servant
to bring Jacob back to him
    and gather Israel to himself,
for I am honoured in the eyes of the Lord
    and my God has been my strength—
6 he says:
“It is too small a thing for you to be my servant
    to restore the tribes of Jacob
    and bring back those of Israel I have kept.
I will also make you a light for the Gentiles,
    that my salvation may reach to the ends of the earth.”

God is going to use Jesus, not only to bring the Jews back to Himself – great as that is – but to bring in the Gentiles also.

God may have greater things in store for each one of us than we can ask or envisage. Perhaps we have too ”small” a vision of what He could do through us? I think of a book title from some years past: ‘Give up your small ambitions.’

‘Verse 6 has been called the Old Testament version of Christ’s ”Great Commission” (Matthew 28:19-20). This mission of the servant involves not only Christ but His followers as well. Paul quoted verse 6 and applied it to himself and Barnabas – and, by extension, to all believers (see Acts 13:46-47). The commission Jesus received from the Father has been given to us also (John 20:21). We too are to be lights in the world (Matthew 5:14-16), witnesses to the ends of the earth (see Acts 1:8). Tom Hale: Applied Old Testament Commentary, pp.1049,1050.