Yes, when you no longer believe that Jesus who saved you, keeps you saved, then you are"""" fallen away from the faith.""
And this happens because someone has led you into a false understanding of God's Grace, using a man made Theology.
Calvinism
MaryCult
JW
Mormon
Mary Baker Eddy
ect.
Paul says you are "Bewitched"........and "fallen from Grace".
So, that is anyone who believes that they can lose their salvation. They are "fallen away from FAITH".... and Paul says you "no longer obey the Truth".
You've become a Self Saver......a SELF RIGHTEOUS person whose faith in Christ is broken.
When we no longer believe in Jesus we will have been led astray.
When we disobey God we will have been led astray by those who believe obedience to God is not important.
1 Thessalonians 4:1-8
1 Finally then, brethren, we request and exhort you in the Lord Jesus, that as you received from us instruction as to how you ought to walk and please God (just as you actually do walk ), that you excel still more.
We are to walk in a manner pleasing to God....and to excel STILL MORE.
2 For you know what commandments we gave you by the authority of the Lord Jesus.
Believers are given commandments to follow.
3 For this is the will of God, your sanctification;
In order to be sanctified, we must follow the commandments given by God.
Examples:
that is, that you abstain from sexual immorality;
4 that each of you know how to possess his own vessel in sanctification and honor,
5 not in lustful passion, like the Gentiles who do not know God;
6 and that no man transgress and defraud his brother in the matter because the Lord is the avenger in all these things, just as we also told you before and solemnly warned you.
7 For God has not called us for the purpose of impurity, but in sanctification.
8 So, he who rejects this is not rejecting man but the God who gives His Holy Spirit to you.
If we reject what we've been taught, we're rejecting God.
Very easy to understand,,,
for those who have ears to HEAR.
2 Thessalonians 3:6
6 Now we command you, brethren, in the name of our Lord Jesus Christ, that you keep away from every brother who leads an unruly life and not according to the tradition which you received from us.
Pay attention:
We are to keep away from A BROTHER, a born again person,
that is not living a life according to what has been taught...
who is living an unruly life.