Isaiah 51:6

“Lift up your eyes to the heavens, &c.] And observe their beauty and order, the constant and regular motion of the heavenly bodies, the firmness and solidity of them: and look upon the earth beneath; how stable and well founded it is: for the heavens shall vanish away like smoke; though they are so firm, and have lasted so long, and have kept their constant situation and course, yet they shall melt away like salt, as the wordf1004 signifies, and disappear in an instant like smoke. Reference seems to be had to the general conflagration, when the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat, (<610312>2 Peter 3:12): and the earth shall wax old like a…”

“(Isa 40:6, Isa 40:8; Psa 102:26; Heb 1:11-12). vanish away--literally, "shall be torn asunder," as a garment [MAURER]; which accords with the context. in like manner--But GESENIUS, "Like a gnat"; like the smallest and vilest insect. JEROME translates, as English Version, and infers that "in like manner" as man, the heavens (that is, the sky) and earth are not to be annihilated, but changed for the better (Isa 65:17). righteousness--My faithfully fulfilled promise (see on Isa 51:5).”

“Lift up your eyes to the heavens - The design of directing their attention to the heavens and the earth is, probably, to impress them more deeply with a conviction of the certainty of his salvation in this manner, namely, the heavens and the earth appear firm and fixed; there is in them no apparent tendency to dissolution and decay. Yet though apparently thus fixed and determined, they will all vanish away, but the promise of God will be unfailing. For the heavens shall vanish away - The word which is rendered here ‘shall vanish away’ (מלח mâlach), occurs nowhere else in the Bible. The primary idea, according to Gesenius, is that of smoothness and softness. Then it means to glide away, to…”

“The heavens - The heavens and earth shall pass away, in regard of their present state, and properties, and use, as smoak is said to vanish, tho' the substance of it be not destroyed. Isaiah 51:7”

“51:6 die like flies: The wicked will die in great multitudes on the day of God’s judgment.”

“Lift up: Isa 40:26; Deu 4:19; Psa 8:3, Psa 8:4 the heavens: Isa 34:4, Isa 50:9; Psa 102:26; Mat 24:35; Heb 1:11, Heb 1:12; Pe2 3:10-12; Rev 6:12-14, Rev 20:11 my salvation: Isa 51:8, Isa 45:17; Psa 103:17; Dan 9:24; Joh 3:15, Joh 3:16, Joh 5:24, Joh 10:27-29; Th2 2:16; Heb 5:9, Heb 9:12, Heb 9:15 Isaiah 51:7”

“The people of God are now summoned to turn their eyes upwards and downwards: the old world above their heads and under their feet is destined to destruction. "Lift up your eyes to the heavens, and look upon the earth beneath: for the heavens will pass away like smoke, and the earth fall to pieces like a garment, and its inhabitants die out like a nonentity; and my salvation will last for ever, and my righteousness does not go to ruin." The reason for the summons follows with kı̄. The heavens will be resolved into atoms, like smoke: nimlâchū from mâlach, related to mârach, root mal, from which comes mâlal (see at Job 14:2), to rub to pieces, to crumble to pieces, or mangle; Aquila,…”