Matthew 1:21

Thou shalt call his name Jesus— That is, He shall be God the Saviour; for he shall prove that glorious and divine Person, the long-expected Messiah, intended by God to save his people, even all that truly and perseveringly believe in him; by procuring an ample pardon for them, and raising them, after a life of holiness on earth, to a state of consummate perfection and eternal happiness. Bishop Pearson seems to have set the etymology of the name Jesus in the clearest light in his large discourse upon it, where he endeavours to prove that Jah, one of the names of God, enters into the composition of the Hebrew name Joshua, to which Jesus answers; a derivation, which plainly shews how Christ's being called Jesus, that is to say, God our Saviour, was in effect an accomplishment of the prophesy, that he should be called Emmanuel; for what else, says the bishop, is God with us, than God our Saviour? Well, therefore, has the Evangelist conjoined the prophet and the angel, asserting that Christ was therefore named Jesus, because it was foretold he should be called Emmanuel. See Pearson on the Creed, p. 69-71 and Doddridge.