Genesis 15:5

He took him outside and said, 'Look up at the heavens and count the stars--if indeed you can count them.' Then he said to him, 'So shall your offspring be.'

(New International Version)

And He took him outside and said, 'Now look toward the heavens, and count the stars, if you are able to count them ' And He said to him, 'So shall your descendants be.'

(New American Standard Bible)

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

(King James Version)