After Abraham's test on the mountain, God said his descendants would be like the stars and like what?

Answer: The sand on the seashore

"I will multiply your descendants like the stars in the sky and the sand on the seashore," the angel of the LORD declared.

“I will surely bless you, and I will multiply your descendants like the stars in the sky and the sand on the seashore. Your descendants will possess the gates of their enemies.”— Genesis 22:17 (BSB)