The Arm of the Lord

Throughout the Old Testament the arm of the Lord represents God's power, especially God’s redeeming power. 

"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 

Then, Isaiah prophesied of the arm of the Lord bringing a much greater redemption. God would redeem all mankind out of the bondage of sin and death. (Hebrews 2:14-15).

"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  

Because there was no man without  sin to redeem man, God Himself would manifest Himself in flesh - the arm of the Lord revealed - to die for our sins, (Acts 20:28, 2Corinthians 5:19).

"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 

When we read Isaiah’s prophecy in Isaiah 53, we see the arm of the Lord revealed is Christ.

"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 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 

In the New Testament, Isaiah’s prophecy is fulfilled.

"But though he had done so many miracles before them, yet they believed not on him: that the saying of Esaias [Isaiah] the prophet might be fulfilled, which he spake, Lord, who hath believed our report? and to whom hath the arm of the Lord been revealed?" - John 12:37-38 

"But they have not all obeyed the gospel. For Esaias [Isaiah] saith, Lord, who hath believed our report?" - Romans 10:16 KJV