But that's not the point. As those posted Scripture verses warns us, there is no assurance that we won't. We share in Christ if only we hold our first confidence firm to the end. If we don't we don't share in Christ. We must persevere to the end but there is no assurance that we will.
I will always do my very best to stay in Christ and when I sin, I will repent, ask Him for His forgiveness, and He will give it to me. It’s not all that complicated.