Hello. The "faith alone" doctrine is of Luther, who began as a servant of Jews but later, in the non-attainment of his worldly pride ambition, came to hate the Jews. Luther famously said what Paul never said:
If you are a preacher of grace, then preach a true and not a fictitious grace; if grace is true, you must bear a true and not a fictitious sin. God does not save people who are only fictitious sinners. Be a sinner and sin boldly, but believe and rejoice in Christ even more boldly, for he is victorious over sin, death, and the world. As long as we are in this world we have to sin. This life is not the dwelling place of righteousness but, as Peter says, we look for a new heaven and a new earth in which righteousness dwells (2 Peter 3:13). It is enough that by the riches of God’s glory we have come to know the Lamb that takes away the sin of the world (John 1:29). No sin will separate us from the Lamb, even though we commit fornication and murder a thousand times a day (cited in Hendrix, Martin Luther, 121-122).