For the record.
I am a Christian. A follower of Jesus Christ who died for my sins. I have placed my faith and trust in Him and Him alone.
John records Jesus as saying:
24Truly, truly, I say to you, he who hears My word, and believes Him who sent Me, has eternal life, and does not come into judgment, but has passed out of death into life. John 5:24
I'm trusting Him at His word.
When I sin I can come before Him in confidence and confess my sins and He will forgive them.
How do we know? John again tells us:
9If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness. 1 John 1:9
Can we have confidence in our salvation with Christ? Yes.
John again records.
13These things I have written to you who believe in the name of the Son of God, so that you may know that you have eternal life. 14This is the confidence which we have before Him, that, if we ask anything according to His will, He hears us. 15And if we know that He hears us in whatever we ask, we know that we have the requests which we have asked from Him. 1 John 5:13-15
Sanctify them through thy truth: thy word is truth. John 17:17