a-pos'-ta-si, a-pos'-tat (he apostasia, "a standing away from"):
I.e. a falling away, a withdrawal, a defection. Not found in the English Versions of the Bible, but used twice in the New Testament, in the Greek original, to express abandonment of the faith.
Deuteronomy 13:13 Certain men, the children of Belial, are gone out from among you, and have withdrawn the inhabitants of their city, saying, Let us go and serve other gods, which ye have not known;
Hebrews 3:12 Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.
*Apostasy caused by giving in to temptation (New Christian? Has not studied God’s word much yet? Vulnerable? Yes! This is why we need to help those new to the faith whenever possible):
Luke 8:13 They on the rock are they, which, when they hear, receive the word with joy; and these have no root, which for a while believe, and in time of temptation fall away.
*Apostasy caused by worldliness:
2 Timothy 4:10 For Demas hath forsaken me, having loved this present world, and is departed unto Thessalonica; Crescens to Galatia, Titus unto Dalmatia.
*Guilt and punishment of Apostasy:
2 Peter 2:20 For if after they have escaped the pollutions of the world through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled therein, and overcome, the latter end is worse with them than the beginning.
2 Peter 2:21 For it had been better for them not to have known the way of righteousness, than, after they have known it, to turn from the holy commandment delivered unto them.
2 Peter 2:22 But it is happened unto them according to the true proverb, The dog is turned to his own vomit again; and the sow that was washed to her wallowing in the mire.
*Apostasy is cautioned against:
2 Peter 3:17 Ye therefore, beloved, seeing ye know these things before, beware lest ye also, being led away with the error of the wicked, fall from your own stedfastness.
*Apostasy shall abound in the latter days:
1 Timothy 4:1 Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils;
1 Timothy 4:2 Speaking lies in hypocrisy; having their conscience seared with a hot iron;
*The falling away must happen first; it is a sign of His soon return.
2 Thessalonians 2:3 Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition;