Ephesians 4:17-20

So this I say and solemnly testify in [the name of] the Lord [as in His presence], that you must no longer live as the heathen (the Gentiles) do in their perverseness [in the folly, vanity, and emptiness of their souls and the futility] of their minds. Their moral understanding is darkened and their reasoning is beclouded. [They are] alienated (estranged, self-banished) from the life of God [with no share in it; this is] because of the ignorance (the want of knowledge and perception, the willful blindness) that is deep-seated in them, due to their hardness of heart [to the insensitiveness of their moral nature]. In their spiritual apathy they have become callous and past feeling and reckless and have abandoned themselves [a prey] to unbridled sensuality, eager and greedy to indulge in every form of impurity [that their depraved desires may suggest and demand]. But you did not so learn Christ! Ephesians 4:17-20

Sounds like we are being given a warning here. Our peace with any warnings that we are given in the Bible is that it is Jesus’ responsibility to insure that we are successful in carrying out our Father’w will. 

For both He Who sanctifies [making men holy] and those who are sanctified all have one [Father]. For this reason He is not ashamed to call them brethren; Hebrews 2:11

Now to Him Who is able to keep you without stumbling or slipping or falling, and to present [you] unblemished (blameless and faultless) before the presence of His glory in triumphant joy and exultation [with unspeakable, ecstatic delight]-- To the one only God, our Savior through Jesus Christ our Lord, be glory (splendor), majesty, might and dominion, and power and authority, before all time and now and forever (unto all the ages of eternity). Amen (so be it). Jude 24-25 

And also that He might deliver and completely set free all those who through the [haunting] fear of death were held in bondage throughout the whole course of their lives. Hebrews 2:15

If it were up to us we would all be exactly like the heathen. Not only would we act like them we would trust in ourselves like them, but thank God that it is not up to us. We have victory, Jesus will not allow it to be any other way. 

Now may the Lord of peace Himself grant you His peace (the peace of His kingdom) at all times and in all ways [under all circumstances and conditions, whatever comes]. The Lord [be] with you all. 2 Thessalonians 3:16

Yet the Lord is faithful, and He will strengthen [you] and set you on a firm foundation and guard you from the evil [one]. And we have confidence in the Lord concerning you, that you are doing and will continue to do the things which we suggest and with which we charge you. 2 Thessalonians 3:3-4

Because of Jesus being greater in us we are able to be used to pray for the heathen, bless them, intercede for them, and serve them in the full grace and compassion of Christ.