Rom 9:33: Isa 28:16 merged with 8:14 (MT and LXX)

Says Rom 9:33, Ἰδοὺ τίθημι ἐν Σιὼν λίθον προσκόμματος καὶ πέτραν σκανδάλου, καὶ ὁ πιστεύων ἐπʼ αὐτῷ οὐ καταισχυνθήσεται, sets words from Isa 8:14 inside Isa 28:16.

Says Isa 28:16 reads הִנְנִי יִסַּד בְּצִיּוֹן אָבֶן (hineni yissad betsiyyon aven, "See, I lay a stone in Zion," BSB) and ends הַמַּאֲמִין לֹא יָחִישׁ (hamma'amin lo yakhish, "the one who believes will never be shaken," BSB).

Says Swete has Ἰδοὺ ἐγὼ ἐμβάλλω εἰς τὰ θεμέλια Σειὼν λίθον … καὶ ὁ πιστεύων οὐ μὴ καταισχυνθῇ. Paul has τίθημι ἐν Σιὼν for the LXX "lay in the foundations" and the future οὐ καταισχυνθήσεται for its emphatic οὐ μὴ καταισχυνθῇ; his "in him" is found in ℵ, A, and Q, not B.

Says Isa 8:14 reads וּלְאֶבֶן נֶגֶף וּלְצוּר מִכְשׁוֹל (ule'even negef uletsur mikhshol, "a stone of stumbling and a rock of offense," BSB). Swete has οὐχ ὡς λίθου προσκόμματι συναντήσεσθε οὐδὲ ὡς πέτρας πτώματι, "you will not meet him as a stumbling stone" (literal).

Says Paul's λίθον προσκόμματος καὶ πέτραν σκανδάλου is nearer the Hebrew than the LXX, which turns the line into a denial. 1 Pet 2:6, 8 joins the same two texts.

On composite citations see note.language.Rom.3.10-Rom.3.18.catena-sources; who the stone is belongs to the exegetical notes.