Verse 4
redeemeth
Heb. "goel," Redemp. (Kinsman type). (See Scofield "Isaiah 59:20").
Verse 11
fear
Also Psalms 103:13, (See Scofield "Psalms 19:9").
Verse 12
Removed our transgression from us
Three Hebrew words are trans. forgive, forgiven: kaphar, to cover; nasa, to lift away; salach, to send away (cf). Leviticus 16:21; Leviticus 16:22 the fundamental O.T. idea of forgiveness being not the remission of penalty, but the separation of the sinner from his sin.
Psalms 103:12 expresses this.
Verse 13
fear
Also Psalms 103:13, (See Scofield "Psalms 19:9").
Verse 20
angels
(See Scofield "Hebrews 1:4").