Romans 9:33

as it is written: “See, I lay in Zion a stone of stumbling and a rock of offense; and the one who believes in Him will never be put to shame.”

Note Isaiah 8:14

Note Isaiah 28:16 (see also LXX)

As it is written, Behold, I lay in Sion a stumblingstone and rock of offence: and whosoever believeth on him shall not be ashamed.

even as it is written, “Behold, I lay in Zion a stumbling stone and a rock of offense; and no one who believes in him will be disappointed.”

Note “Behold”, from “ἰδοὺ”, means look at, take notice, observe, see, or gaze at. It is often used as an interjection.

even as it is written, Behold, I lay in Zion a stone of stumbling and a rock of offence: And he that believeth on him shall not be put to shame.