arm, + help, mighty, power, shoulder, strength

Boyd’s Bible Dictionary:

Baring of, signified servitude
(Gen. 49:15); withdrawing of, denoted rebellion (Neh. 9:29); bearing upon, meant to sustain (Isa. 9:6; 22:22).

“Shoulder” From Concise Bible Dictionary:

Often alluded to in scripture as the place of strength, on which burdens are borne. The high priest had the names of the twelve tribes on his shoulders, as in a place of safety (Ex. 28:12). Of Christ it is said, when He comes to reign, the “government shall be on his shoulder” (Isa. 9:6); and, as the Good Shepherd, when He finds a lost sheep He places it on His shoulders (Luke 15:5). When God blesses Israel in their land the Gentiles will bring Israel’s dispersed daughters upon their shoulders, that is, will give them substantial aid (Isa. 49:22).

“Arm” From Concise Bible Dictionary:

The member of the body which is capable of lifting burdens and defending the person: it is used symbolically for the power and strength of God on behalf of His saints (Ex. 15:16; Psa. 77:15; Isa. 51:9; Isa. 53:1). The arm of Jehovah is often spoken of in the Old Testament It redeemed (Ex. 6:6); gathers His own (Isa. 40:11); and rules for Him (Isa. 40:10), as in the kingdom. It is a holy arm (Isa. 52:10; Psa. 98:1); and it is a glorious arm (Isa. 63:12). The arm of the Lord is revealed to souls where there is repentance and faith in the report which God sends (Isa. 53:1; Rom. 10:16). It is to be trusted in even by the isles of the Gentiles, that is, by sinners everywhere in creation (Isa. 51:5).

Strong’s Dictionary of Hebrew Words:

Transliteration:
zrowa`
Phonic:
zer-o’-ah
Meaning:
or (shortened) zroao {zer-o'-ah}; and (feminine) zrowpah {zer-o-aw'}; or zrowah {zer-o-aw'}; from 2232; the arm (as stretched out), or (of animals) the foreleg; figuratively, force
KJV Usage:
arm, + help, mighty, power, shoulder, strength