Jesus is pictured at the right hand of God more than once (Ps. 110:1; Mt. 26:64; Mk 12:36; Acts 2:33), but he is more than just God’s right-hand man like Moses had been, he actually is part of the Godhead. He is “the Arm of the Lord” as John says in 12:37-38 quoting Isaiah 53:1. How much do we use our arms? How much has God used His Arm? Psalm 98:1-2 says, “His right hand and his holy arm have worked salvation for him.” Isaiah 51:9 begs God to use his arm in his day as he had in the past. Then in 52:10 he says the Lord’s holy arm is bare and the salvation of God will be seen to the furthest extent of the earth. Surely Jesus’ coming is being considered here.
The passage John quotes; however, asks “who has believed our report?” and “to whom has the arm of the Lord been revealed?” Jesus had done so many powerful miracles revealing himself as the arm of the Lord, but many people still wouldn’t believe. He claimed this fulfilled Isaiah’s prophecy.
If we continued reading Isaiah 53 we would find it familiar. The Christ would be rejected by men and despised and ultimately suffer and die bearing the iniquity(sin and wickedness) of us all. Yes, God put his arm on display for all to see and then cut that arm off and allowed his arm to die separated from him(Mt. 27:46) How impressive that his arm lives and reaches out to save us even now. At the end of that arm is the hand that is not shortened or unable to save (Isa 59:1).
Christ, the Arm of the Lord, reaches out to save us. Will you reach out and allow him to take your hand in his and keep it there so that you can be saved? It you will there is no power that can remove it.