So you have laid a solid foundation in Christ but you are avoiding the whole truth of God with "eternal security" when you refuse to address the apostasy of believers.
Matthew 24:10-14
10 "And at that time many will fall away and will deliver up one another and hate one another. 11 "And many false prophets will arise, and will mislead many. 12 "And because lawlessness is increased, most people's love will grow cold. 13 "But the one who endures to the end, he shall be saved. 14 "And this gospel of the kingdom shall be preached in the whole world for a witness to all the nations, and then the end shall come.
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2 Thessalonians 2:3
3 Let no one in any way deceive you, for it will not come unless the apostasy comes first, and the man of lawlessness is revealed, the son of destruction,
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1 Timothy 4:1-5
4:1 But the Spirit explicitly says that in later times some will fall away from the faith, paying attention to deceitful spirits and doctrines of demons, 2 by means of the hypocrisy of liars seared in their own conscience as with a branding iron, 3 men who forbid marriage and advocate abstaining from foods, which God has created to be gratefully shared in by those who believe and know the truth. 4 For everything created by God is good, and nothing is to be rejected, if it is received with gratitude; 5 for it is sanctified by means of the word of God and prayer.
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Your profile says you are a Bible teacher so what do you teach about these sections of Scripture?
Jesus said he who endures to the end shall be saved; He did not say that he who is saved will endure to the end.