Revelation 2:4 But I have this against you, that you have left your first love.
Revelation 3:16 So because you are lukewarm, and neither hot nor cold, I will spit you out of My mouth.
Hebrews 6:6 and then have fallen away, it is impossible to renew them again to repentance,
Hebrews 3:12 Take care, brethren, that there not be in any one of you an evil, unbelieving heart that falls away from the living God.
There are a lot of warnings in the Bible about falling away from God. I see it happen often, and it is one of the most discouraging things for me as a pastor to witness in people. I have seen people backslide, repent and grow, backside again, repent and grow, and backside again.
The foundational reason is the same as Adam and Eve’s fall in the very beginning, the devil and his demons are very real, very crafty, they hate us, they hate Jesus, and they work on us non-stop.
2 Corinthians 11:3 But I am afraid that, as the serpent deceived Eve by his craftiness, your minds will be led astray from the simplicity and purity of devotion to Christ.
1 Peter 5:8 Be of sober spirit, be on the alert. Your adversary, the devil, prowls around like a roaring lion, seeking someone to devour.
The second basic reason is the world, the money, and the stuff that is in the world that is all around us all of the time. We quickly become entangled in it, and we easily fall in love with it.
If we become haphazard in our spiritual disciplines like daily Bible reading, prayer, gathering with other believers and worshiping God we will fall away, guaranteed, and it is the business of life caused by all the stuff in the world that is the main competition to the spiritual disciplines.
1 John 2:15 Do not love the world nor the things in the world. If anyone loves the world, the love of the Father is not in him.
Luke 16:13 No servant can serve two masters; for either he will hate the one and love the other, or else he will be devoted to one and despise the other. You cannot serve God and money.
Loving the world and the money and stuff in it is very, very easy to do. We slide into it hardly even noticing, and when we are loving the world even just a little bit we have fallen from our first love.
We need to have a holy fear of drifting away from God recognizing that once the slide begins it is very difficult to stop.
Hebrews 4:1 Therefore, let us fear if, while a promise remains of entering His rest, any one of you may seem to have come short of it.
The most important safeguard against turning your back on God is a strong and healthy accountability relationship with others. But sad to say, most Christians don’t think they need it, and they are too busy in the world to make time for it.