From what you say, maybe you can't but I know where I stand IN CHRIST.
Gal. 2:20
I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me.
Now that is assurance of Salvation.
1 Co 15:56
The sting of death is sin; and the strength of sin is the law.
Rom 8:3,4
3) For what the law could not do, in that it was weak through the flesh, God sending his own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh:
4) That the righteousness of the law might be fulfilled in us, who walk not after the flesh, but after the Spirit.
Rom. 7:4
Wherefore, my brethren, ye also are become dead to the law by the body of Christ; that ye should be married to another, even to him who is raised from the dead, that we should bring forth fruit unto God.
Gal. 2:19
For I through the law am dead to the law, that I might live unto God.