2 Bible Verses about Apostasy, How To Avoid

And for this very reason, indeed, giving all diligence, add to your faith, courage; and to courage, knowledge; and to knowledge, temperance; and to temperance, patience; and to patience, godliness; and to godliness, brotherly kindness; and to brotherly kindness, love:read more.
for these things being in you, and abounding, make you to be neither slothful, nor unfruitful, in the knowledge of our Lord Jesus Christ. But he who has not these things, is blind, shutting his eyes, having become forgetful of the purification of his old sins. Wherefore, the rather, brethren, earnestly endeavor to make your calling and election sure; for doing these things, you shall never fall; and thus there shall be richly ministered to you, an entrance into the everlasting kingdom of our Lord and Saviour Jesus Christ.

Beloved, do not believe every spirit, but try the spirits, whether they be from God; because many false prophets are gone forth 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 that spirit of antichrist, which you have heard that it comes, and now is in the world already.read more.
You are of God, little children, and have overcome them; because he is greater, who is with you, than he who is with the world. They are of the world; therefore they speak from the world, and the world hearkens to them. We are of God: he who know God, hearkens to us; he who is not of God, hearkens not to us. By this we know the spirit of truth, and the spirit of error.