Genesis 15:5

Yahweh brought him outside, and said, "Look now toward the sky, and count the stars, if you be able to count them." He said to Abram, "So shall your seed be."

And he brought him forth abroad, and said, Look now toward heaven, and number the stars, if thou be able to number them: and he said unto him, So shall thy seed be.

and He bringeth him out without, and saith, 'Look attentively, I pray thee, towards the heavens, and count the stars, if thou art able to count them;' and He saith to him, 'Thus is thy seed.'