How do you know when you've lost your salvation?
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.Another totally, categorically false assertion on your part.
The “sufficiency of Christ” is his ability to rightly judge at the Day of Trumpets on the authority of his righteous shed blood. That blood is what makes his judgement sufficient!
His sufficiency bears not upon any other! He will judge, and it will not be subject to question. No one can claim what is his alone, and no scripture offers such.
The path to salvation is clearly written in scripture: Confess, repent, sin no more, to the end.
1John 2
[1] My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous:
[2] And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.
[3] And hereby we do know that we know him, if we keep his commandments.
[4] He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
[5] But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him.
[6] He that saith he abideth in him ought himself also so to walk, even as he walked.
[7] Brethren, I write no new commandment unto you, but an old commandment which ye had from the beginning. The old commandment is the word which ye have heard from the beginning.
If you have an argument with what John wrote, argue with him, next time you see him. .