Galatians 3:19 → Deuteronomy 5:5

Paul's statement that the law was "ordained through angels by the hand of a mediator" (diatageis di' angelōn en cheiri mesitou) in Galatians 3:19 echoes the mediated character of the Sinai covenant described in Deuteronomy 5:5, where Moses testified: "I stood between the LORD and you" (anoki omed ben-YHWH uvenekem). Paul draws on this to argue for the inferiority of the law relative to the Abrahamic promise. The logic is contrast: the promise came directly from God to Abraham (no mediator needed — "a mediator implies more than one party, but God is one," v. 20), while the law required double mediation through both angels and Moses. The angelic role at Sinai, not explicit in Deuteronomy 5:5 but attested in Deuteronomy 33:2 (LXX), Acts 7:53, and Hebrews 2:2, was well established in Second Temple tradition. Paul's argument is not that the law is contrary to God's promises (v. 21) but that its mediated, temporary character demonstrates it was never designed to replace the direct, unconditional promise. The redemptive-historical progression moves from promise (direct) through law (mediated) to fulfillment in Christ (direct again).