Because He loves us that Much. He takes us and our salvation that seriously.
Therefore, we are ambassadors for Christ, as though God were making an appeal through us; we beg you on behalf of Christ, be reconciled to God. He made Him who knew no sin to be sin on our behalf, so that we might become the righteousness of God in Him.
2 Corinthians 5:20-21 NASB
and while being reviled, He did not revile in return; while suffering, He uttered no threats, but kept entrusting Himself to Him who judges righteously; and He Himself bore our sins in His body on the cross, so that we might die to sin and live to righteousness; for by His wounds you were healed. For you were continually straying like sheep, but now you have returned to the Shepherd and Guardian of your souls.
1 Peter 2:23-25 NASB
Surely our griefs He Himself bore, And our sorrows He carried; Yet we ourselves esteemed Him stricken, Smitten of God, and afflicted. But He was pierced through for our transgressions, He was crushed for our iniquities; The chastening for our well-being fell upon Him, And by His scourging we are healed. All of us like sheep have gone astray, Each of us has turned to his own way; But the Lord has caused the iniquity of us all To fall on Him. He was oppressed and He was afflicted, Yet He did not open His mouth; Like a lamb that is led to slaughter, And like a sheep that is silent before its shearers, So He did not open His mouth. By oppression and judgment He was taken away; And as for His generation, who considered That He was cut off out of the land of the living For the transgression of my people, to whom the stroke was due? His grave was assigned with wicked men, Yet He was with a rich man in His death, Because He had done no violence, Nor was there any deceit in His mouth. But the Lord was pleased To crush Him, putting Him to grief; If He would render Himself as a guilt offering, He will see His offspring, He will prolong His days, And the good pleasure of the Lord will prosper in His hand. As a result of the anguish of His soul, He will see it and be satisfied; By His knowledge the Righteous One, My Servant, will justify the many, As He will bear their iniquities. Therefore, I will allot Him a portion with the great, And He will divide the booty with the strong; Because He poured out Himself to death, And was numbered with the transgressors; Yet He Himself bore the sin of many, And interceded for the transgressors.
Isaiah 53:4-12 NASB
He could have not created us in the first place, but He did, with choice and flesh and blood.
For the life of the flesh is in the blood, and I have given it to you on the altar to make atonement for your souls; for it is the blood by reason of the life that makes atonement.’
Leviticus 17:11 NASB
He could not have taken us seriously enough to allow His creation to cut and bleed the the flesh of Himself, but He did.
He loves us so much that He invested Himself COMPLETELY for our eternal well-being, and all for His Glory!!!