Isaiah 43:12

“I have declared, and I have saved, and I have showed, &c.] The Targum is, “I have showed to Abraham your father what should come to pass; I redeemed you out of Egypt, as I swore to him between the pieces; and I caused you to hear the doctrine of the law at Sinai.” But the sense is, that God had declared by his prophets, long before the Messiah came, that he would send him; that he should come and save his people by his obedience, sufferings, and death; accordingly he was come, and was the author of salvation; the Lord had wrought out salvation by him, as he had declared he would; and this he had shown, published, and made known by the everlasting Gospel, preached among all nations: when…”

“declared--predicted the future (Isa 41:22-23). saved--the nation, in past times of danger. showed--namely, that I was God. when . . . no strange god, &c.--to whom the predictions uttered by Me could be assigned. "Strange" means foreign, introduced from abroad.”

“I have declared - I have announced or predicted future events; I have warned of danger; I have marked out the path of safety. He had thus shown that he was the true God (see the note at Isaiah 41:22-23). And have saved - I have delivered the nation in former times of danger, and have thus shown that I would protect them. And have showed - Hebrew, ‘Caused to hear.’ I have made known future events, and have thus showed that I was God. When there was no strange god among you - Before the time when there was any idol in the nation, and when, therefore, it could not be pretended that deliverance was to be traced to anyone but to Yahweh. The word ‘god’ here is not in the original, but is properly…”

“I - I first foretold your deliverance, and then effected it. When - And this I did when you did not worship any idols. Isaiah 43:13”

“declared: Isa 37:7, Isa 37:35, Isa 37:36, Isa 46:10, Isa 48:4-7 no strange: Deu 32:12; Psa 81:9, Psa 81:10 my witnesses: Isa 43:10, Isa 37:20, Isa 44:8, Isa 46:9 Isaiah 43:13”