Jeremiah, Hosea, and other prophets said He wasn't. In fact, they have God saying that directly.
God requires the shedding of blood because it illustrates the law of SIN and DEATH , there are a multitude of passages which clearly show the blood propitiation of Jesus Christ.
Romans 3
23 For all have sinned, and come short of the glory of God;
24 Being justified freely by his grace through the redemption that is in Christ Jesus:
25
Whom God hath set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God;
All the animal sacrifices before the incarnation, death, burial and resurrection of Jesus Christ were but a shadow of the shedding of the blood of the promised messianic seed of the woman in Genesis 3:15.
Hebrews 10:1 For the law having a shadow of good things to come, and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect.
Mortal blood gives life to the flesh of a mortal being, when it is shed that flesh mortal being dies.
The Logos (the Second Person of the Trinity) became mortal flesh in a virgin's womb, He willingly laid down His life allowing His blood to be shed on our behalf.
He then was made alive by the eternal Spirit instead of mortal blood.
1 Timothy 3:16 And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.
Jesus desire is to share this life with "whosoever will" and He sent the Holy Spirit to invite us back into His eternal blessings.
Once we are visited by the Holy Spirit and convicted of sin then the LORD accepts us in His beloved Son Jesus Christ.
A "head knowledge" of the propitiation of the shed blood of Jesus Christ for the remission of sins is not enough for salvation.
It must be BELIEVED.
That is the meaning of those passages you presented. God above all wants FAITH rather than intellectual acceptance of doctrine alone.
Again:
Romans 3
23 For all have sinned, and come short of the glory of God;
24 Being justified freely by his grace through the redemption that is in Christ Jesus:
25
Whom God hath set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God;