God credits the faith, which he gifted to his children as righteous. This is because it is of God and God is righteous.Does God credit our faith as righteousness? See Romans 4
Do sinners understand and respond to the gospel? See Matthew 13.
Does God transfer individuals into Christ's kingdom? See Colossians 1:13
Are we made righteous in Christ? See Romans 5:19.
Are we made perfect? See Hebrews 12:23
Are we made blameless and holy? See Colossians 1:22
Are we sealed with the Holy Spirit forever? See Ephesians 1:13 and John 14:16
Romans 4:5 But to the one who does not work, but believes in Him who justifies the ungodly, his faith is credited as righteousness
Romans 4:23-24 Now not for his sake only was it written that it was credited to him,
but for our sake also, to whom it will be credited, to us who believe in Him who raised Jesus our Lord from the dead
Colossians 2:12 Having been buried with him in baptism, you also have been raised with Him by means of your credited faith in the divine power of God who raised Jesus from the dead.
If faith was from man, then just like everything coming from man, it would be horribly corrupted and unrighteous.
So "our faith" only applies to God's elect children to whom God gave faith.
As long as you keep lifting up humans as generating their own righteousness, you will be opposed by those who lift up God alone as being righteous.