Isaiah 48:5

I have even from the beginning declared it to thee - He had foretold future events, so that they had abundant demonstration thai he was the true God, and so that they could not be under a mistake in regard to the source of their deliverances from danger.

Mine idol hath done them - The idols and molten images had not foretold these events and when they came to pass, it could not, therefore, be pretended that they had been produced by idols. By predicting them, Yahweh kept up the proof that he was the true God, and demonstrated that he alone was worthy of their confidence and regard.