7 Bible Verses about Apostasy, How To Avoid

But bad men and impostors will go on from bad to worse, misleading and being misled. But you must cling to the things which you have learnt and have been taught to believe, knowing who your teachers were, and that from infancy you have known the sacred writings which are able to make you wise to obtain salvation through faith in Christ Jesus.read more.
Every Scripture is inspired by God and is useful for teaching, for convincing, for correction of error, and for instruction in right doing; so that the man of God may himself be complete and may be perfectly equipped for every good work.

But for this very reason--adding, on your part, all earnestness-- along with your faith, manifest also a noble character: along with a noble character, knowledge; along with knowledge, self-control; along with self-control, power of endurance; along with power of endurance, godliness; along with godliness, brotherly affection; and along with brotherly affection, love.read more.
If these things exist in you, and continually increase, they prevent your being either idle or unfruitful in advancing towards a full knowledge of our Lord Jesus Christ. For the man in whom they are lacking is blind and cannot see distant objects, in that he has forgotten that he has been cleansed from his old sins. For this reason, brethren, be all the more in earnest to make sure that God has called you and chosen you; for it is certain that so long as you practise these things, you will never stumble. And so a triumphant admission into the eternal Kingdom of our Lord and Saviour Jesus Christ will be freely granted to you.

I know that, when I am gone, cruel wolves will come among you and will not spare the flock; and that from among your own selves men will rise up who will seek with their perverse talk to draw away the disciples after them. Therefore be on the alert; and remember that, night and day, for three years, I never ceased admonishing every one, even with tears.

Dear friends, do not believe every spirit, but put the spirits to the test to see whether they are from God; for many false teachers have gone out into the world. The test by which you may recognize the Spirit of God is that every spirit which acknowledges that Jesus Christ has come as man is from God, and that no spirit is from God which does not acknowledge this about Jesus. Such is the spirit of the anti-Christ; of whose coming you have heard, and it is already in the world.read more.
As for you, dear children, you are God's children, and have successfully resisted them; for greater is He who is in you than he who is in the world. They are the world's children, and so their language is that of the world, and the world listens to them. We are God's children. The man who is beginning to know God listens to us, but he who is not a child of God does not listen to us. By this test we can distinguish the Spirit of truth from the spirit of error.

till we all of us arrive at oneness in faith and in the knowledge of the Son of God, and at mature manhood and the stature of full-grown men in Christ. So we shall no longer be babes nor shall we resemble mariners tossed on the waves and carried about with every changing wind of doctrine according to men's cleverness and unscrupulous cunning, making use of every shifting device to mislead. But we shall lovingly hold to the truth, and shall in all respects grow up into union with Him who is our Head, even Christ.read more.
Dependent on Him, the whole body--its various parts closely fitting and firmly adhering to one another-- grows by the aid of every contributory link, with power proportioned to the need of each individual part, so as to build itself up in a spirit of love.

In conclusion, strengthen yourselves in the Lord and in the power which His supreme might imparts. Put on the complete armour of God, so as to be able to stand firm against all the stratagems of the Devil. For ours is not a conflict with mere flesh and blood, but with the despotisms, the empires, the forces that control and govern this dark world--the spiritual hosts of evil arrayed against us in the heavenly warfare.read more.
Therefore put on the complete armour of God, so that you may be able to stand your ground on the day of battle, and, having fought to the end, to remain victors on the field. Stand therefore, first fastening round you the girdle of truth and putting on the breastplate of uprightness as well as the shoes of the Good News of peace-- a firm foundation for your feet. And besides all these take the great shield of faith, on which you will be able to quench all the flaming darts of the Wicked one; and take the helmet of salvation, and the sword of the Spirit which is the word of God. Pray with unceasing prayer and entreaty on every fitting occasion in the Spirit, and be always on the alert to seize opportunities for doing so, with unwearied persistence and entreaty on behalf of all God's people, and ask on my behalf that words may be given to me so that, outspoken and fearless, I may make known the truths (hitherto kept secret) to spread which I am an ambassador in chains--so that when telling them I may speak out boldly as I ought.

proclaim God's message, be zealous in season and out of season; convince, rebuke, encourage, with the utmost patience as a teacher.