Faith "WORKS" through love.
Gal. 5:6
So where we see LOVE, there is faith. Love shows there is faith there. Some people have various doctrines painted upon themselves, and are often the least loving, if any love at all. Is that faith? Nope.
Where there is NO LOVE, there is NO FAITH regardless of doctrines
Where there is LOVE there is faith, even without doctrines
These are intimately intertwined, faith and love. They do not exist, apart
Any thing that is not of faith is SIN,
Romans 14:23
And we "all" sin, so there is that.
Sin does not defeat or eradicate love, nor does the existence of sin defeat love. The LIGHT shines from the DARK.
Not every single thing we do is out of love or faith. We probably sin more than we ever realize.
We do not become "sinless" by faith or by love.