Albert Barnes Commentary Matthew 12:21

"And in his name shall the Gentiles hope." — Matthew 12:21 (ASV)

And in his name, etc. The Hebrew in Isaiah is, And the isles shall wait for his law. The idea is, however, the same. The isles denote the Gentiles, or a part of the Gentiles—those out of Judea. The meaning is, that the gospel should be preached to the Gentiles, and that they should receive it. See Barnes on Isaiah 41:1 for an explanation of the word islands as it is used in the Bible.