8 Bible Verses about Apostasy, How To Avoid

In my heart I have hidden your word, so that I may not sin against you.

But evil people and imposters will progress to the worse, deceiving and being deceived. But you continue in [the things] which you have learned and are convinced [of], [because you] know from whom you learned [them], and that from childhood you have known the holy writings that are able [to make] you wise for salvation through faith in Christ Jesus.read more.
All scripture [is] inspired by God and profitable for teaching, for reproof, for correction, for training in righteousness, in order that the person of God may be competent, equipped for every good work.

and [for] this same [reason], and [by] applying all diligence, supply with your faith excellence of character, and with excellence of character, knowledge, and with knowledge, self-control, and with self-control, patient endurance, and with patient endurance, godliness, and with godliness, brotherly love, and with brotherly love, love.read more.
For [if] these [things] are yours and are increasing, this does not make [you] useless or unproductive in the knowledge of our Lord Jesus Christ. For [the one] for whom these [things] [are] not present is blind, being nearsighted, {having forgotten the cleansing} of his former sins. Therefore, brothers, be zealous even more to make your calling and election secure, because [if you] do these [things], you will never ever stumble. For in this way entrance into the eternal kingdom of our Lord and Savior Jesus Christ will be richly supplied for you.

I know that after my departure fierce wolves will come in among you, not sparing the flock. And from among you yourselves men will arise, speaking {perversions of the truth} in order to draw away the disciples after them. Therefore be on the alert, remembering that night and day [for] three years I did not stop warning each one [of you] with tears.

Dear friends, do not believe every spirit, but test the spirits [to determine] if they are from God, because many false prophets have gone out into the world. By this you know the Spirit of God: every spirit that confesses Jesus Christ has come in the flesh is from God, and every spirit that does not confess Jesus is not from God, and this is the [spirit] of the antichrist, [of] which you have heard that it is coming, and now it is already in the world.read more.
You are from God, little children, and have conquered them, because the one [who is] in you is greater than the one [who is] in the world. They are from the world; {therefore} they speak from the world and the world listens to them. We are from God. The one who knows God listens to us; whoever is not from God does not listen to us. By this we know the Spirit of truth and the spirit of deceit.

until we all reach the unity of the faith and the knowledge of the Son of God, to a mature man, to a measure of the maturity of the fullness of Christ, so that we may no longer be infants, tossed about by waves and carried about by every wind of teaching, by the trickery of people, by craftiness with reference to the scheming of deceit. But speaking the truth in love, we are to grow into him [with reference to] all [things], who is the head, Christ,read more.
from whom the whole body, joined together and held together by every supporting ligament, according to the working by measure of each single part, the growth of the body makes for the building up of itself in love.

Finally, become strong in the Lord and in the might of his strength. Put on the full armor of God, so that you may be able to stand against the stratagems of the devil, because our struggle is not against blood and flesh, but against the rulers, against the authorities, against the world rulers of this darkness, against the spiritual [forces] of wickedness in the heavenly [places].read more.
Because of this, take up the full armor of God, in order that you may be able to resist in the evil day, and having done everything, to stand. Stand therefore, girding your waist with truth, and putting on the breastplate of righteousness, and binding [shoes] under your feet with the preparation of the good news of peace, in everything taking up the shield of faith, with which you are able to quench all the flaming arrows of the evil one, and receive the helmet of salvation, and the sword of the Spirit, which is the word of God, with all prayer and supplication praying at all times in the Spirit, and to this [end] being alert with all perseverance and supplication for all the saints, and for me, that a word may be given to me at the opening of my mouth, to make known with boldness the mystery of the gospel, for the sake of which I am an ambassador in chains, that {in them} I may speak freely, as it is necessary for me to speak.

preach the word, be ready in season [and] out of season, reprove, rebuke, exhort, with all patience and instruction.