Behold, I and the children whom the LORD hath given me are for signs and for wonders in Israel from the LORD of hosts, which dwelleth in mount Zion.
Behold, I and the children whom the Lord hath given me, are for signs and for wonders in Israel from the Lord of hosts. Isaiah means salvation of Yahweh: His children's names also (Isaiah 7:3; Isaiah 7:14; Isaiah 8:3) were "signs" suggestive of the coming and final deliverance.
For wonders - i:e., symbols of the future (Isaiah 20:3; Zechariah 3:8). The clause, "Behold, I and the children whom the Lord hath given me," is quoted in Hebrews 2:13, to prove the manhood of the Messiah. This is the main and ultimate fulfillment of the prophecy; its temporary meaning applied to Ahaz' time. Isaiah typically, as mouthpiece of the believing remnant in the midst of the faithless majority of the Jewish nation, in Isaiah 8:17-18, personates Messiah, who is at once "Father" and "Son," Isaiah and Immanuel, "Child" and "Mighty (Hero) God," and is therefore called here a "wonder," as in Isaiah 9:6, "Wonderful." Hence, in Hebrews 2:13, believers are called His "children;" but in Isaiah 8:11-12, "His brethren." On "the Lord hath given me," see John 6:37; John 6:39; John 10:29; John 17:12.
Which dwelleth in mount Zion - and will therefore protect Jerusalem.