Romans 8. We are saved by the faith of Christ, not our faith in Christ. Our sanctification depends on our faith, we may lose our faith in Him and deny Him but he remains faithful and will not deny us. 2Tim 2:13. This issue was settled long ago in the Reformation. I wrote a booklet many years ago detailing what happens when a person comes to true repentance and excepts Christ. Contact me and I will send it to you.