shall ye not know it?

I, even I, am the Lord; and beside me there is no saviour. I have declared, and have saved, and I have shewed, when there was no strange god among you: therefore ye are my witnesses, saith the Lord, that I am God. Yea, before the day was I am he; and there is none that can deliver out of my hand: I will work, and who shall let it? Thus saith the Lord, your redeemer, the Holy One of Israel; For your sake I have sent to Babylon, and have brought down all their nobles, and the Chaldeans, whose cry is in the ships. I am the Lord, your Holy One, the creator of Israel, your King. Thus saith the Lord, which maketh a way in the sea, and a path in the mighty waters; Which bringeth forth the chariot and horse, the army and the power; they shall lie down together, they shall not rise: they are extinct, they are quenched as tow. Remember ye not the former things, neither consider the things of old. Behold, I will do a new thing; now it shall spring forth; shall ye not know it? I will even make a way in the wilderness, and rivers in the desert. Isaiah 43:11-19 King James Bible