3Romans 3:23, ‘for all have sinned and fall short of the glory of God’
4Romans 6:23, ‘For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.’
5Acts 4:12, “Salvation is found in no one else, for there is no other name under heaven given to men by which we must be saved.“1 Timothy 2:5, For there is one God and one mediator between God and men, the man Christ Jesus,John 14:6 Jesus answered, "I am the way and the truth and the life. No one comes to the Father except through me.
7Ephesians 2:8-10 For it is by grace you have been saved, through faith—and this not from yourselves, it is the gift of God— not by works, so that no one can boast. For we are God's workmanship, created in Christ Jesus to do good works, which God prepared in advance for us to do.
8Another question: I have a good life now, so why would I need Christianity?