Behold, I will do a new thing,.... A wonderful and unheard of thing, and therefore introduced with a "behold", as a note of admiration; the same with the new thing created in the earth, Jer 31:22, the incarnation of the Son of God; who took flesh of a virgin, appeared in the likeness of sinful flesh, and was made sin and a curse for his people, in order to obtain eternal redemption for them; which blessing, though not newly thought of, resolved on, contrived, and agreed upon, that being from eternity; nor newly made known, or as to the virtue and efficacy of it, which had been from the beginning of the world, yet new as to the impetration of it by the blood and sacrifice of Christ; and may be also called "new", because excellent, it being of a spiritual nature, complete and eternal, and having so many valuable blessings in it, as justification, pardon, and eternal life:now it shall spring forth; or bud forth as a branch, in a very short time, suddenly, and at once; one of the Messiah's names is that of the Branch; see Zec 3:8:shall ye not know it?
the Redeemer, and the redemption by him.