Deu 33:26-29 “There is none like God, O Jeshurun, who rides through the heavens to your help, through the skies in his majesty. The eternal God is your dwelling place, and underneath are the everlasting arms. And he thrust out the enemy before you and said, ‘Destroy.’ So Israel lived in safety, Jacob lived alone, in a land of grain and wine, whose heavens drop down dew. Happy are you, O Israel! Who is like you, a people saved by the LORD, the shield of your help, and the sword of your triumph! Your enemies shall come fawning to you, and you shall tread upon their backs.”
What blessing God gave to Israel! As Paul wrote in Romans 3:2: To them were committed the oracles of God. The true greatness of Israel is the same as the greatness of the Christian: not in and of themselves, but in their God, that there is no one like the God of Jeshurun. God is great and uses His greatness on behalf of His people, upholding them with the everlasting arms. When believers are a people saved by the LORD, it means that God is for them, and heaven is on their side. If God is for us, who can be against us? (Romans 8:31). He is the shield of the believer’s help.
The everlasting arms of God are underneath, as a foundation for everything. Everything in the universe, all creation, the church, the individual believer – all built on a firm foundation, with God’s everlasting, strong, arms underneath. They are also underneath the believer as a place of rest. Our Father’s arms are a perfect pillow, giving perfect rest. We can put all our weight on these strong arms, leaning heavily on them.
With this salvation, with God as their shield and sword, with victory assured, all this gave God’s people great reason to be happy. These blessings, in their spiritual sense, were not limited to Israel. Believers, God’s people under the new covenant, also have such blessings and reasons to be happy. (Guzik)
If we sink deep from humiliation, from trials, inner conflict, weary working, illness, or impending death – no matter what brings us low – we have God’s everlasting arms underneath us. “You cannot go so low but that God’s arms of love are lower still. You get poorer and poorer; but ‘underneath are the everlasting arms.’ You get older and feebler; your ears are failing, your eyes are growing dim; but ‘underneath are the everlasting arms.’” “I recollect being at the funeral of one of our brethren, and a dear friend in Christ offered prayer in which there was a sentence which struck me, ‘O Lord,’ he said, ‘thou hast laid our friend low, but we thank thee that he cannot go any lower, for underneath him are the everlasting arms.’ Yes, underneath the bodies of the saints are the everlasting arms of God.” “They are arms which always were, and always will be: arms which always were strong, and never will grow faint or weary; arms which once outstretched will never be drawn back again; arms which once engaged for the defense of the chosen people shall never cease to work for their good world without end. Not failing arms, nor dying arms, but everlasting arms, are underneath the saints of God.” “If you are indeed believers in Christ, you are ‘a people saved by the Lord.’ If you only read as far as the word ‘saved’ and there pause, what music there is in the words—‘a people saved’! Not a people who may be saved, who are in process of being saved, but a people saved; for he that believes in Jesus is saved. The work is done.” “Remember that, O believer. Not half saved, but completely saved; saved in the Lord with an everlasting salvation; you shall not be ashamed nor confounded, world without end. Why, that one word ‘saved’ is enough to make the heart dance as long as life remains.” (Spurgeon)