Therefore, brethren, be even more diligent to make your call and election sure, for if you do these things you will never stumble (2Peter 1:10).
I had a gentleman come to me some years ago in doubt of his salvation. "What if I'm not good enough, sincere, enough, etc…?”
I said to him: "The focus of everything you've said thus far is yourself. But where should you look for salvation—to yourself or to Christ? Do you believe Jesus was good enough? Do you believe He died for your sins? Do you believe the Father accepted the life and sacrifice of His Son? Do you believe Jesus actually rose from the dead?"
He replied, "Yes, I believe all of these things."
And I answered, "Then why doubt your salvation? You have a perfect Savior who perfectly saves. He can lose no one who has been given to Him by the Father. Your assurance of your salvation is in your Savior."
My brother came doubting but left assured.
Thankfully, dear reader, our great salvation isn't predicated upon our behavior or even our fallible sense of assurance; but on Jesus’ blood and righteousness. So, believe the precious promise of God in Christ and be encouraged,
He is also able to save to the uttermost those who come to God through Him, since He always lives to make intercession for them (Hebrews7:25).