Commentaries:
Robertson's Word Pictures (NT)
Make you perfect (katartisai). First aorist active optative of katartizw, to equip, as in Hebrews 10:5. A wish for the future. See I Corinthians 1:10; II Corinthians 13:11; II Timothy 3:17.
Working in us (poiwn en emin). "Doing in us." Some MSS. read "in you."
Well-pleasing (euareston). Compound adjective (eu, arestov). Usually with the dative (Romans 12:2), here with enwpion autou more like the Hebrew. This is one of the noblest doxologies in the N.T.
Other Robertson's Word Pictures (NT) entries containing Hebrews 13:21:
1 Peter 4:11
1 John 3:22
Revelation 1:6
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