Because it is contained in Scripture, "Behold, I lay in Zion a chief cornerstone, chosen, and precious: He who believes in him will not be disappointed."
(22) As to this verb he has, but in the previous parts he comes nearer to the Hebrew than to the Sept. Paul quotes this sentence twice, Romans 9:33, and follows the Sept. as Peter does. Indeed, the difference between יחיש he shall make haste, and יבש, he shall be ashamed, is very small; and further, the former verb admits of a similar meaning with the latter. — Ed. 