51:9 Wake up! Wake up! Clothe yourself with strength, O arm of the Lord!
23 Wake up as in former times, as in antiquity! Did you not smash the Proud One? Did you not wound the sea monster? (NET)
Footnote 23: The arm of the Lord is a
symbol of divine military power. Here it is personified and told to arouse itself from sleep and prepare for action.
53:1 Who would have believed what we just heard? When was the Lord’s power
5 revealed through him? (NET)
Footnote 5
Heb “the arm of the Lord.” The “arm of the Lord” is a
metaphor of military power; it pictures the Lord as a warrior who bares his arm, takes up his weapon, and crushes his enemies (cf. 51:9-10; 63:5-6). But Israel had not seen the Lord’s military power at work in the servant.
12:38 so that the word
79 of Isaiah the prophet would be fulfilled. He said, “
Lord, who has believed our message, and to whom has the arm of the Lord81 been revealed?” (NET)
Footnote 81: “The arm of the Lord” is an
idiom for “God’s great power” (as exemplified through Jesus’ miraculous signs).
BTW, Some might try to draw distinctions without a difference, but that would be ridiculous, like saying footnotes should not be used to explain figurative expressions.