Romans 5:1 KJV
Therefore being justified by faith, we have peace with God through our Lord Jesus Christ:
Romans 5:9 KJV
Much more then, being now justified by his blood, we shall be saved from wrath through him.
Verse one says we are justified by faith and verse nine says we are justified by His blood. I see this as a line graph where justified is the center.
On one side is God's place in justification.
We are justified, so far as God is concerned, by the shed blood of Jesus Christ. His death paid the wages of sin and satisfied the justice of God. God is just in justifying because of His Blood.
One the other side is our place in justification.
So far as our part is concerned, we are justified by faith. Faith is the instrument through which we have access to the righteousness of Christ and His shed blood.