Brother, respectfully, what you’ve said contradicts both the Torah and the Apostolic Writings.
Animal sacrifices never saved souls–not in the Old Covenant nor the New. Scripture plainly states:
“It is impossible for the blood of bulls and goats to take away sins.”
— Hebrews 10:4
Greek: ἀδύνατον γὰρ αἷμα ταύρων καὶ τράγων ἀφαιρεῖν ἁμαρτίας (adynaton gar haima taurōn kai tragōn aphairein hamartias)
The verb ἀφαιρεῖν (aphairein) means “to remove completely.” The text asserts a divine impossibility–not a temporary effect.
The Levitical sacrifices pointed forward typologically to the true atoning work of Messiah:
“For since the law has but a shadow [σκιὰν, skian] of the good things to come instead of the true form [εἰκόνα, eikona] of these realities…”
— Hebrews 10:1
Salvation has always been by faith, not through sacrifice in itself. Abraham himself was not justified by animal offerings but by belief:
“Abraham believed God, and it was counted to him as righteousness.”
— Genesis 15:6, quoted in Romans 4:3, Galatians 3:6, James 2:23
Greek (Romans 4:3): ἐπίστευσεν δὲ Ἀβραὰμ τῷ θεῷ, καὶ ἐλογίσθη αὐτῷ εἰς δικαιοσύνην (episteusen de Abraam tō Theō, kai elogisthē autō eis dikaiosynēn)
Christ returned not merely because of Abrahamic promises, but to fulfill them in Himself:
“Now the promises were made to Abraham and to his offspring… who is Christ.”
— Galatians 3:16
“If you are Christ’s, then you are Abraham’s offspring, heirs according to promise.”
— Galatians 3:29
Christ returned (incarnated) to deal with sin finally, not to repeat the symbolic pattern of sacrifices:
“But as it is, he has appeared once for all at the end of the ages to put away sin by the sacrifice of himself.”
— Hebrews 9:26
Greek: εἰς ἀθέτησιν ἁμαρτίας διὰ τῆς θυσίας αὐτοῦ (eis athetēsin hamartias dia tēs thysias autou) — “to annul/remove sin by His sacrifice”
“Behold, the Lamb of God, who takes away the sin of the world!”
— John 1:29
So to your question—Why did He return?
He returned because no Levitical priest or animal could redeem a single soul. He came to fulfill every shadow, cancel the record of debt, and become our Great High Priest (Hebrews 4:14) forever.
God bless.
Johann.