As people move farther away from God they no longer feel they will be held accountable. So they will seek their own interest and their own justice. They will follow beliefs not taught by the bible.
(2 Timothy 3:1-7) 3 But know this, that in the last days critical times hard to deal with will be here. 2 For men will be lovers of themselves, lovers of money, self-assuming, haughty, blasphemers, disobedient to parents, unthankful, disloyal, 3 having no natural affection, not open to any agreement, slanderers, without self-control, fierce, without love of goodness, 4 betrayers, headstrong, puffed up [with pride], lovers of pleasures rather than lovers of God, 5 having a form of godly devotion but proving false to its power; and from these turn away. 6 For from these arise those men who slyly work their way into households and lead as their captives weak women loaded down with sins, led by various desires, 7 always learning and yet never able to come to an accurate knowledge of truth. . .
(1 Timothy 4:1) However, the inspired utterance says definitely that in later periods of time some will fall away from the faith, paying attention to misleading inspired utterances and teachings of demons,
(2 Corinthians 11:12-15) 12 Now what I am doing I will still do, that I may cut off the pretext from those who are wanting a pretext for being found equal to us in the office of which they boast. 13 For such men are false apostles, deceitful workers, transforming themselves into apostles of Christ. 14 And no wonder, for Satan himself keeps transforming himself into an angel of light. 15 It is therefore nothing great if his ministers also keep transforming themselves into ministers of righteousness. But their end shall be according to their works. . .
It will become more and more obvious who worships in truth and who does not. God will expose the sins of those who do not in the last days which we are living in.
(2 Thessalonians 2:8-12) 8 Then, indeed, the lawless one will be revealed, whom the Lord Jesus will do away with by the spirit of his mouth and bring to nothing by the manifestation of his presence. 9 But the lawless one’s presence is according to the operation of Satan with every powerful work and lying signs and portents 10 and with every unrighteous deception for those who are perishing, as a retribution because they did not accept the love of the truth that they might be saved. 11 So that is why God lets an operation of error go to them, that they may get to believing the lie, 12 in order that they all may be judged because they did not believe the truth but took pleasure in unrighteousness. . .
(Romans 1:18-21) 18 For God’s wrath is being revealed from heaven against all ungodliness and unrighteousness of men who are suppressing the truth in an unrighteous way, 19 because what may be known about God is manifest among them, for God made it manifest to them. 20 For his invisible [qualities] are clearly seen from the world’s creation onward, because they are perceived by the things made, even his eternal power and Godship, so that they are inexcusable; 21 because, although they knew God, they did not glorify him as God nor did they thank him, but they became empty-headed in their reasonings and their unintelligent heart became darkened. . .
One thing that would expose those who do not worship in truth is they would have unnatural desires.
(Romans 1:24-27) 24 Therefore God, in keeping with the desires of their hearts, gave them up to uncleanness, that their bodies might be dishonored among them, 25 even those who exchanged the truth of God for the lie and venerated and rendered sacred service to the creation rather than the One who created, who is blessed forever. Amen. 26 That is why God gave them up to disgraceful sexual appetites, for both their females changed the natural use of themselves into one contrary to nature; 27 and likewise even the males left the natural use of the female and became violently inflamed in their lust toward one another, males with males, working what is obscene and receiving in themselves the full recompense, which was due for their error. . .
(Matthew 24:9-14) . . .. 10 Then, also, many will be stumbled and will betray one another and will hate one another. 11 And many false prophets will arise and mislead many; 12 and because of the increasing of lawlessness the love of the greater number will cool off. 13 But he that has endured to the end is the one that will be saved. 14 And this good news of the kingdom will be preached in all the inhabited earth for a witness to all the nations; and then the end will come. . .