Charles Ellicott Commentary Isaiah 43:18-19

"Remember ye not the former things, neither consider the things of old. Behold, I will do a new thing; now shall it spring forth; shall ye not know it? I will even make a way in the wilderness, and rivers in the desert." — Isaiah 43:18-19 (ASV)

Remember you not... — All the wonders of the great historic past of Israel were to be as nothing compared with the new manifestation of the power of Jehovah, which Isaiah sees as already dawning in the future.

Shall you not know it? — Better, Will you not give heed to it?

I will even make a way in the wilderness... — The literal and the spiritual senses melt into each other. The very beasts of the field shall lose their ferocity in the presence of the saints of God. For “dragons and owls,” read jackals and ostriches.