James 2:23 And the scripture was fulfilled which saith, Abraham believed God, and it was imputed unto him for righteousness: and he was called the Friend of God.
[Patriarchs & Prophets pp 155] Heavenly beings were witnesses of the scene as the faith of Abraham and the submission of Isaac were tested. The trial was far more severe than that which had been brought upon Adam. Compliance with the prohibition laid upon our first parents involved no suffering, but the command to Abraham demanded the most agonizing sacrifice. All heaven beheld with wonder and admiration Abraham's unfaltering obedience. All heaven applauded his fidelity. Satan's accusations were shown to be false.
God declared to His servant, “Now I know that thou fearest God [notwithstanding Satan's charges], seeing thou hast not withheld thy son, thine only son from Me.” God's covenant, confirmed to Abraham by an oath before the intelligences of other worlds, testified that obedience will be rewarded. It had been difficult even for the angels to grasp the mystery of redemption—to comprehend that the Commander of heaven, the Son of God, must die for guilty man. When the command was given to Abraham to offer up his son, the interest of all heavenly beings was enlisted.
With intense earnestness they watched each step in the fulfillment of this command. When to Isaac's question, “Where is the lamb for a burnt offering?” Abraham made answer, “God will provide Himself a lamb;” and when the father's hand was stayed as he was about to slay his son, and the ram which God had provided was offered in the place of Isaac—then light was shed upon the mystery of redemption, and even the angels understood more clearly the wonderful provision that God had made for man's salvation. 1 Peter 1:12.
Isaiah 53:10 Yet it pleased the Lord to bruise him; he hath put him to grief: when thou shalt make his soul an offering for sin, he shall see his seed, he shall prolong his days, and the pleasure of the Lord shall prosper in his hand.
May God add His blessing to the study of His word. “Good night” and God bless!