“The highest angel in heaven had not the power to pay the ransom for one lost soul. Cherubim and seraphim have only the glory with which they are endowed by the Creator as His creatures, and the reconciliation of man to God could be accomplished only through a mediator who was equal with God, possessed of attributes that would dignify, and declare him worthy to treat with the infinite God in man’s behalf, and also represent God to a fallen world.
Man’s substitute and surety must have man’s nature, a connection with the human family whom he was to represent, and, as God’s ambassador, he must partake of the divine nature, have a connection with the Infinite, in order to manifest God to the world, and be a mediator between God and man.” — Ellen G. White, Selected Messages, book 1, p. 257.
“Jesus continues: As you confess Me before men, so I will confess you before God and the holy angels. You are to be My witnesses upon earth, channels through which My grace can flow for the healing of the world. So I will be your representative in heaven. The Father beholds not your faulty character, but He sees you as clothed in My perfection. I am the medium through which Heaven’s blessings shall come to you. And everyone who confesses Me by sharing My sacrifice for the lost shall be confessed as a sharer in the glory and joy of the redeemed.” — Ellen G. White, The Desire of Ages, p. 357.
The old covenant-sacrificial system was replaced by the new; instead of animals being sacrificed by sinful priests in an earthly sanctuary, we now have Jesus, our perfect Sacrifice. He represents us before the Father in the sanctuary in heaven, which forms the basis of the new covenant and its promises.