God is Spirit. The arm of the LORD is a metaphor for God’s power and strength. The arm of the LORD saves, delivers, and redeems.
"Wherefore say unto the children of Israel, I am the LORD, and I will bring you out from under the burdens of the Egyptians, and I will rid you out of their bondage, and I will redeem you with a stretched out arm, and with great judgments:" - Exodus 6:6 (Deuteronomy 26:8).
"Thou hast with thine arm redeemed thy people, the sons of Jacob and Joseph. Selah." - Psalm 77:15.
Then, the Lord speaks of power and redemption by His arm in
a much greater way. His arm that saved and delivered His people from physical
bondage in Egypt, was now going to take on form.
Not as a literal arm, but as a holy human body that would
save and redeem all humanity from the spiritual bondage of sin. This body would
be God Himself, revealed in flesh. God’s body is called, “the arm of the Lord.”
God had looked for a man that could redeem mankind, but
there was none without sin that could pay the price.
"And he saw that there was no man, and wondered that there was no intercessor: therefore his arm brought salvation unto him; and his righteousness, it sustained him." - Isaiah 59:16
God Himself stepped in to pay the price. He did this by making
Himself a body – the arm of the Lord.
Isaiah describes how God’s arm would be revealed.
"Who hath believed our report? and to whom is the arm
of the LORD revealed? ... He is despised and rejected of men; a man of sorrows,
and acquainted with grief… he was despised, and we esteemed him not...But he
was wounded for our transgressions, he was bruised for our iniquities: the
chastisement of our peace was upon him; and with his stripes we are
healed." - Isaiah 53:1, 3, 5 (See all of Isaiah 53).
We find the arm of the Lord to be God Himself - JESUS
CHRIST!
"The LORD hath made bare his holy arm in the eyes of all the nations; and all the ends of the earth shall see the salvation of our God." - Isaiah 52:10
Jesus, as the arm of the LORD, reaches out to humanity,
redeeming us from sin, bringing us back to Himself by the gospel. (Hebrews
2:14-15, 2 Corinthians 5:19, Matthew 1:21-23, Acts 2:38).