How, exactly, do you determine a ‘true’ believer from a ‘false’ believer? That seems a little contradictory. How are there false believers, if one must only accept Christ as their Lord and Savior, and be baptized? Why are you discounting the other parts of Scripture:
And he said unto him, Why callest thou me good? there is none good but one, that is, God: but if thou wilt enter into life, keep the commandments (Mt 19: 17, KJV). This says explicitly that if you want life, keep the commandments.
Full context: Matt 19:16-30. The rich young man thinks he has kept all the commandments. But, of course he hasn’t because:
8 If we say we have no sin, we deceive ourselves, and the truth is not in us. 9 If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness. 10 If we say we have not sinned, we make him a liar, and his word is not in us. (1 John 1:8-10)
He is a self-righteous rich young man who doesn’t recognize the sin in his life. His true colors are revealed as he walks away. See Acts 16:16-34 for the salvation of the Philippian Jailer - a better example.
Man, by nature, is an unrighteous sinner (Romans 3:10 and 3:23). He has no ability to make righteous choices without God’s grace. Romans 3 is pretty clear on that.
If ye love me, keep my commandments (Jn 14: 15, KJV). This implies that if you don’t love Christ, you will not keep His commandments.
And you won’t - unbelievers don’t. And believers who do love him don’t either even though they strive to (see verses above). However, the Believer (the Elect, Jesus’ sheep) will strive to keep the commandments and will confess any committed sins the Holy Spirit convicts them about. See Evidence List 2. A Believer should act as Paul writes in 1 Thess 5:12-28. Our sanctification is what gets damaged when we sin.
If ye keep my commandments, ye shall abide in my love; even as I have kept my Father’s commandments, and abide in his love (Jn 15: 10, KJV). This explicitly says you shall remain in Christ if you keep the commandments, implying that by failing to do so, you fail to abide in Him. Of course, you’ll bring up your 500 year-old interpretation that ‘this just means to accept Him into your heart and be baptized’, even though He clearly spoke to the rich man about keeping ALL the commandments.
John 15:10-11 If you keep my commandments, you will abide in my love, just as I have kept my Father’s commandments and abide in his love. These things I have spoken to you, that my joy may be in you, and that your joy may be full.
Here Jesus speaks about obedience (Evidence List 2), and we know we still occasionally sin, so per the 1 John verses I gave above, we confess our sin which God forgives. Note this verse:
My little children, I am writing these things to you so that you may not sin. But if anyone does sin, we have an advocate with the Father, Jesus Christ the righteous. (1 John 2:1)
“500 year-old interpretation”: Since we have systematic theology, and we can see evidence from the OT and NT Scriptures for eternal security, I reject your assertion out-of-hand.
You also bring up assurance, yet Paul tells us he is running a race, and working out his salvation in fear and trembling. Is he, then, a false believer? He surely wasn’t confident that he was saved at that moment. I’m sure you’ve addressed this with some ‘interpretation’. Can I ask you something: what, exactly, gives your interpretation more credence than 2,000 years of extremely meticulous and historical interpretation of both Scripture AND Tradition?
All Believers are in a race, and the race is for our sanctification. The Elect are not going to be lost, however, because once God begins a good work in us, He completes it:
For the Lord loves justice; he will not forsake his saints. They are preserved forever, but the children of the wicked shall be cut off. Psalm 37:28
1 Those who trust in the Lord are like Mount Zion, which cannot be moved, but abides forever. 2 As the mountains surround Jerusalem, so the Lord surrounds his people, from this time forth and forevermore. Psalm 125:1-2
35 Jesus said to them, “I am the bread of life; whoever comes to me shall not hunger, and whoever believes in me shall never thirst. 36 But I said to you that you have seen me and yet do not believe. 37 All that the Father gives me will come to me, and whoever comes to me I will never cast out. 38 For I have come down from heaven, not to do my own will but the will of him who sent me. 39 And this is the will of him who sent me, that I should lose nothing of all that he has given me, but raise it up on the last day. 40 For this is the will of my Father, that everyone who looks on the Son and believes in him should have eternal life, and I will raise him up on the last day.” (John 6:35-40)
And I am sure of this, that he who began a good work in you will bring it to completion at the day of Jesus Christ. (Philippians 1:6)
Looking unto Jesus the author and finisher of our faith (Hebrews 12:2)
So, do the Sheep of Jesus, the Good Shepherd, ever perish? No.
Examine yourself, make sure you are a sheep, and have assurance (1 John 5:13). That gives full joy!
Regards, OldProf