I'm not sure what you're proposing here. Are you suggesting that the Lord Jesus Christ is unnecessary for salvation?
John 3:16. 'For so God loved the world that He gave His only begotten Son that whoever believes in Him should not perish but have eternal life.' Salvation is only ever through the Lord Jesus Christ. Any other way of salvation is not Christian.
Let's have another look at Leviticus 16 and other relevant verses:
Sixth time.
'Aaron shall lay both his hands on the head of live goat, confess over it all the iniquities of the children of Israel, and all their transgressions, concerning all their sins, putting them on the head of the goat, and shall send it away into the wilderness by the hand of a suitable man.'
Here we have the Atonement in type or figure. The sins are placed on the goat and are taken away.
Isaiah 53:5-6. 'The chastisement for our peace was upon Him., and by His stripes [wounds] we are healed. All we like sheep have gone astray; we have turned everyone into his own way; and the LORD has laid on Him the iniquity of us all.'
Here we have the Atonement in prophecy. 700 years before the event, Isaiah reveals that it is actually the Lord Jesus Christ, God the Son, upon whom our sins will be laid.
1 Peter 2:24. 'Who Himself bore our sins in His own body on the tree, that we having died to sins, might live for righteousness - by whose stripes you were healed.'.
And here we have the Atonement presented to us as history. The Lord Jesus has borne the sins, the iniquities of all those whom the father has given Him, upon the cursed cross. He could only have borne those sins in His own body if they were laid or placed upon Him, so we have the prophecies of Leviticus and Isaiah specifically fulfilled in this verse.
To be sure those for whom our Lord died will be brought to faith and repentance in due time, but the cross comes first. for, 'Without the shedding of blood there is no remission.' 'God forbid that I should glory, save in the cross!'