What follows are Paul’s Old Testament Quotations from Romans 12:19, 20 (NET).

#

Paul (NET)

Blue Letter Bible (Septuagint)

NET Bible (Greek parallel text)

1

Vengeance is mine, I will repay…

Romans 12:19b (NET)
ἐν ἡμέρᾳ ἐκδικήσεως ἀνταποδώσω

εμοι εκδικησις εγω ανταποδωσω

2

…if your enemy is hungry, feed him; if he is thirsty, give him a drink; for in doing this you will be heaping burning coals on his head.

Romans 12:20 (NET) Table
ἐὰν πεινᾷ ὁ ἐχθρός σου τρέφε αὐτόν ἐὰν διψᾷ πότιζε αὐτόν τοῦτο γὰρ ποιῶν ἄνθρακας πυρὸς σωρεύσεις ἐπὶ τὴν κεφαλὴν αὐτοῦ

εαν πεινα ο εχθρος σου ψωμιζε αυτον εαν διψα ποτιζε αυτον τουτο γαρ ποιων ανθρακας πυρος σωρευσεις επι την κεφαλην αυτου

Paul apparently did his own translation part from the Hebrew and part from the Greek in Item #1.  The Septuagint translates, In the day of vengeance I will recompense, while the Hebrew translates, Vengeance is Mine, and retribution, according to Bill Braun.1

Item #2 is identical in the Septuagint, the parallel Greek text and the Hebrew, except for τρέφε, a form of τρέφω in the Septuagint where the parallel Greek text reads ψωμιζε, a form of ψωμίζω.

 

Addendum: March 18, 2020
The Elpenor version of the Septuagint had ψωμιζε (Table).


1 This site is no longer available.