Is works necessary with faith to be saved? St James says faith if it does not have works is dead. So it seems if you have deep faith and love for Jesus you would automatically do works. But one needs to keep growing his faith as St Jude says building yourselves up in your most holy faith and Jesus says "this is the work of God that you believe on Him whom He sent" that is to keep having a relationship with God so that you come to see Jesus as the light of the world and God's Only Son and Messiah God
Romans 5 gives great hope towards those who have truly received Jesus. The hope that ultimately their hope of receiving salvation is dependent only on the blood of Jesus but going back to sin is sometimes a rejection of God and hence faith. I am not qualified to say if someone is saved or not who goes back to sin but am I not boasting when I feel I am better than other men because I do righteous works? I must do righteous works and live holy yet deep inside feel I am just like other men and as depraved? or is this a protestant teaching as an attack against people who live righteously?
we must all hope in salvation by the mercy of God apart from works but to make our call and election sure we must have a living faith. A deep faith. Without Him we can do nothing