I dont know what you mean by eternal security.
The satanic heresy is saying the eternally lazy and disobedient and uncaring selfish people think they are going to heaven when they are not.
Mat 7:21 Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Mat 7:22 Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
Mat 7:23 And then will I profess unto them, I never knew you: depart from me, ye that licve selfishly and refuse to keep the commandments.
The problem with once saved always saved is it makes people relax and not strive (20 times in bible), fight the fight of faith,
1 Tim 6:10 For the love of money is the root of all evil: which while some coveted after, they have erred from the faith, and pierced themselves through with many sorrows.
1 Tim 6:11 But thou, O man of God, flee these things; and follow after righteousness, godliness, faith, love, patience, meekness.
1 Tim 6:12 Fight the good fight of faith, lay hold on eternal life, whereunto thou art also called, and hast professed a good profession before many witnesses.
and they are disobedient and not keep the commandments Whic Are Gods conditions of salvation.
the disobedient will never enter heaven no matter what they profess.
"But to Israel he saith, All day long I have stretched forth my hands unto a disobedient and gainsaying people." -Romans 10:21.
"Knowing this, that the law is not made for a righteous man, but for the lawless and disobedient, for the ungodly and for sinners, for unholy and profane, for murderers of fathers and murderers of mothers, for manslayers," -1 Timothy 1:9.
Written LONG AFTER JESUS WENT TO HEAVEN AND WRITTEN WHILE THE NEW COVENANT WAS IN EFFECT
"For men shall be lovers of their own selves, covetous, boasters, proud, blasphemers, disobedient to parents, unthankful, unholy," -2 Timothy 3:2.
Written LONG AFTER JESUS WENT TO HEAVEN AND WRITTEN WHILE THE NEW COVENANT WAS IN EFFECT
"They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate." -Titus 1:16.
Written LONG AFTER JESUS WENT TO HEAVEN AND WRITTEN WHILE THE NEW COVENANT WAS IN EFFECT
"For we ourselves also were sometimes foolish, disobedient, deceived, serving divers lusts and pleasures, living in malice and envy, hateful, and hating one another." -Titus 3:3.
Written LONG AFTER JESUS WENT TO HEAVEN AND WRITTEN WHILE THE NEW COVENANT WAS IN EFFECT
"Unto you therefore which believe he is precious: but unto them which be disobedient, the stone which the builders disallowed, the same is made the head of the cor:7.ner," -1 Peter 2
Written LONG AFTER JESUS WENT TO HEAVEN AND WRITTEN WHILE THE NEW COVENANT WAS IN EFFECT
"And a stone of stumbling, and a rock of offence, even to them which stumble at the word,
being disobedient: whereunto also they were appointed."
Written LONG AFTER JESUS WENT TO HEAVEN AND WRITTEN WHILE THE NEW COVENANT WAS IN EFFECT
"Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water." -1 Peter 3:20.
What happened to the disobedient in Noahs day.
Once saved always saved, right?
What happened to adam and EVE in the garden SAVED, in full GRACE living PERFECTLY ]once saved always saved?
Where is adam and eve now?
Once saved always saved?
No. I the grave.
Written LONG AFTER JESUS WENT TO HEAVEN AND WRITTEN WHILE THE NEW COVENANT WAS IN EFFECT