I have just done a quick search on fell away, fallen away, fall away, abandoned as in abandoned their faith, turned away.
This doesn't fit that criteria:
For it is impossible for those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Ghost, And have tasted the good word of God, and the powers of the world to come, If they shall fall away, to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put him to an open shame. (Heb 6:4-6 KJV)
Neither does this, but they are both concerning:
For the time is coming when people will not endure sound teaching, but having itching ears they will accumulate for themselves teachers to suit their own passions, and will turn away from listening to the truth and wander off into myths.
2 Timothy 4:3-4
Other verses that speak of the perils that beset us are:
Heb_6:6 If they shall fall away, to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put him to an open shame.
Mar_4:15 And these are they by the way side, where the word is sown; but when they have heard, Satan cometh immediately, and taketh away the word that was sown in their hearts.
Luk_9:25 For what is a man advantaged, if he gain the whole world, and lose himself, or be cast away?
1Ti 1:19 Holding faith, and a good conscience; which some having put away concerning faith have made shipwreck:
2Ti_4:4 And they shall turn away their ears from the truth, and shall be turned unto fables.
Heb_12:25 See that ye refuse not him that speaketh. For if they escaped not who refused him that spake on earth, much more shall not we escape, if we turn away from him that speaketh from heaven:
2Pe_3:17 Ye therefore, beloved, seeing ye know these things before, beware lest ye also, being led away with the error of the wicked, fall from your own stedfastness.
Rev_22:19 And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book.
I care. You need to tell me what NOSAS is.