Thus far in the previous posts, the premise is: that with those of Matthew 7 which Jesus will tell to get away from Him are non-Christians, but is actually according to men's LEAVEN doctrine of OSAS (once saved always saved, i.e., once you believe on Jesus you cannot sin ever again).
However, God's Word reveals that above idea is not so, otherwise Apostle Paul would never have warned brethren in 2 Thessalonians 2 about the coming time of the great falling away, nor would Paul warn about brethren falling away in the last days.
1 Tim 4:1-2
4 Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils;
2 Speaking lies in hypocrisy; having their conscience seared with a hot iron;
KJV
Acts 20:28-31
28 Take heed therefore unto yourselves, and to all the flock, over the which the Holy Ghost hath made you overseers, to feed the church of God, which he hath purchased with his own blood.
29 For I know this, that after my departing shall grievous wolves enter in among you, not sparing the flock.
30 Also of your own selves shall men arise, speaking perverse things, to draw away disciples after them.
31 Therefore watch, and remember, that by the space of three years I ceased not to warn every one night and day with tears.
KJV
2 Thess 2:3-4
3 Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition;
4 Who opposeth and exalteth himself above all that is called God, or that is worshipped; so that he as God sitteth in the temple of God, shewing himself that he is God.
KJV
2 Tim 3:4-8
4 Traitors, heady, highminded, lovers of pleasures more than lovers of God;
5 Having a form of godliness, but denying the power thereof: from such turn away.
6 For of this sort are they which creep into houses, and lead captive silly women laden with sins, led away with divers lusts,
7 Ever learning, and never able to come to the knowledge of the truth.
8 Now as Jannes and Jambres withstood Moses, so do these also resist the truth: men of corrupt minds, reprobate concerning the faith.
KJV
2 Tim 4:3-4
3 For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;
4 And they shall turn away their ears from the truth, and shall be turned unto fables.
KJV