Nevertheless He saved them for His name’s sake, that He might make His mighty power to be known. – Psalm 106:8

The people did not see that their God by all His wonders was pledging Himself to them. After having done so much for them, He would not leave them. Could He have brought them out of Egypt to kill them at the Red Sea? They even dared to say that this was their suspicion. Oh, the slanders of unbelief! But if they had understood His wonders, they would have seen that He who had done such great things for them had bound Himself to perfect His purpose, and to bring them into the land which He had promised to their fathers. “Ah!” you say, “they were very stupid.” I do not defend them; but what about yourselves? Have we not been mistrustful? Have we not said in our hearts, “He will yet fail us, and our faith will be disappointed”? Alas, great God, we blush and are ashamed! But listen—

“Determined to save, He watched o’er my path
When, Satan’s blind slave, I sported with death;
And can He have taught me to trust in His name,
And thus far have brought me to put me to shame?”

Will the Lord lose all that He has wrought in us, and for us? Is He like to the foolish one, who began to build and was not able to finish? Does the Eternal revoke His resolves? Does the Almighty turn from His purposes? Is it not said, “The Strength of Israel will not lie; for He is not a man, that He should lie, nor the son of man, that He should repent”? O believer, learn this lesson well; and trust in your unchanging God: thus shall you understand His wonders in Egypt. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/2204.cfm