The enemy has always had a propensity to offer cheap substitutes in exchange for the glorious hope which can be found only in Christ Himself. The fleshly desires which have plagued 
humanity since the Fall do not satisfy simply because they cannot satisfy. The desires of the flesh are unquenchable and they will continuously demand more and more. Interestingly, the more that we feed these desires, the more that they will hunger and thirst to be filled. True, soul-satisfying contentment is not found in more money, a bigger house, a faster car, a more lucrative career, a better education, partying it up, a more attractive spouse or even religion for the matter. You will literally go insane chasing after these empty pursuits because you will always come up short! Feelings of disappointment and disillusionment will ensue every single time. There is unequivocally nothing under the sun which is capable of ever providing our hearts with full and lasting satisfaction.
Our God is certainly a compassionate Father abounding in patience desiring for all of us to come to repentance, however I do believe that there is a point of no return that deserves to be mentioned. Dabbling in sin, particularly habitual sin, is extremely dangerous territory for the Christian. A prime example of this in found when Esau sells his birthright inheritance for a single meal, directly disobeying God. Upon desiring God’s blessing, Esau is unable to repent despite the fact that he sought it earnestly.
Hebrews 12:15-17 tells us:
15 See to it that no one fails to obtain the grace of God; that no “root of bitterness” springs up and causes trouble, and by it many become defiled; 16 that no one is sexually immoral or unholy like Esau, who sold his birthright for a single meal. 17 For you know that afterward, when he desired to inherit the blessing, he was rejected, for he found no chance to repent, though he sought it with tears.
When it comes to sin in our own lives, particularly with respect to repeated, intentional and habitual sin, I fear that too many believers mistakenly believe that God’s grace somehow provides a licence for them to remain in this sin. In Romans 6:1-4 Paul reminds believers of the following:
1 What shall we say, then? Shall we go on sinning so that grace may increase? 2 By no means! We are those who have died to sin; how can we live in it any longer? 3 Or don’t you know that all of us who were baptized into Christ Jesus were baptized into his death? 4 We were therefore buried with him through baptism into death in order that, just as Christ was raised from the dead through the glory of the Father, we too may live a new life.
The enemy is very cunning and deceptive with the strategy and the tactics he uses to lure us into committing sinful behaviours. What I have learnt from books as well as personal experience is that if we are not actively pursuing the Lord, then we are in effect drifting away which quenches the indwelling Holy Spirit. One of Satan’s primary weapons is to do whatever it takes to persuade us to compromise away 
our Christian convictions. It always starts with something seemingly small and innocent. As time progresses, we begin to rationalize and justify why this sin is not actually sin at all, falling prey to the enemy’s lies. Moreover, we begin to build up a threshold of tolerance where we our flesh demands more of a “buzz”. At this point, the seemingly innocent sin evolves into an addictive sinful pattern progressively pulling us further and further away from God. Our formerly high sensitivity to this sin gradually depletes and unbeknownst to the Christian, he or she has strayed so far away that it becomes exceedingly challenging to repent.
This concept of reaching a point of no return is quite controversial however I do believe that it merits discussion because Satan is constantly prowling around like a roaring lion looking for whom he may devour on sight(1 Pet 5:8). 1 John 5:16-17 talks about sinning unto death below:
16 If you see any brother or sister commit a sin that does not lead to death, you should pray and God will give them life. I refer to those whose sin does not lead to death. There is a sin that leads to death. I am not saying that you should pray about that. 17 All wrongdoing is sin, and there is sin that does not lead to death.
GotQuestion.org defines the “sin unto death” as “willful, continuous, unrepentant sin”. This specific passage is exceedingly complicated to interpret, however it should underscore the reality that we are living in a spiritual battleground where we need God every second of every minute of every hour of every day. We need to be consistently growing and maturing in our faith through being in God’s Word and living out an authentic Christian Life in joyful obedience to Him. We should be so filled with the Holy Spirit that we need not even entertain the very thought of committing any sin which formerly held us captive.
In a like manner Ephesians 4:17-19 says,
17 So I tell you this, and insist on it in the Lord, that you must no longer live as the Gentiles do, in the futility of their thinking. 18 They are darkened in their understanding and separated from the life of God because of the ignorance that is in them due to the hardening of their hearts. 19 Having lost all sensitivity, they have given themselves over to sensuality so as to indulge in every kind of impurity, and they are full of greed.
It is completely illogical to re-visit our former sinful ways because of this infinitely precious and glorious gift we have in Christ Jesus Who imputes His entire righteousness onto us when we humbly believe and trust in His atoning work on Calvary! We need to crucify those old fleshly desires and “…put on the new self created to be like God in true righteousness and holiness”(Eph. 4:24). Jesus already paid the price in full and destroyed the power which sin formerly had over us(Romans 7) so let’s embrace this glorious freedom we have in Christ!
Theological Reflections 