From Fr. Dwight Longenecker ...
Here is how Satan spreads his lies:
1. Natural Law is ignored, undermined or made to look stupid by particular instances where it seems not apply.
2. Subsequently religious and civil authorities have their laws questioned because they are 'too strict' too 'black and white', 'unworkable' or 'lacking in compassion'.
3. Relativism is therefore introduced. An understanding gradually grows that 'there are no objective rules' that apply to all people at all times.
4. Individualism is the next step. 'I guess I have to decide what is right for me in my situation.'
5. Sentimentalism: People who live in a sinful situation demand that they not be judged. They deserve compassion and understanding. They are nice people really...but they have a problem. They're sick. They're wounded. Who are you to judge?
6. Dialogue is demanded. "You need to listen to us and to our stories. Then you will understand we are just like you."
7. Once sympathy is won, the goalposts are moved. Now they are not 'sick' or 'wounded' they're just 'different'. They expect to be accepted despite their 'differences'.
8. Equal rights are expected by those who are acting against God's law. "We are not asking you to approve us. We are simply asking you to tolerate a difference of opinion. Simply allow us to be who we are!"
9. Equal rights are demanded. Legislation and lobbying and protests are now in order. The pressure group for sin starts to get aggressive. They do so out of 'hurt' and 'woundedness.' Once they get their 'rights' (they claim) they will be happy and won't be so aggressive.
10. Tolerance being won, they will not stop. They now demand not only that you tolerate, but that you approve. They've moved from being 'sick' or 'wounded' or 'disabled' by their condition to tolerance, and now they proclaim their condition to be 'good'. As Thomas More was not allowed to remain silent on the King's 'great matter' but had to approve, so the pressure group insists on approval.
11. What was once tolerated now becomes mandatory. Society must integrate the new morality into every level--right down to schools and churches and scout groups. Everyone must adopt the new morality or suffer.
12. Persecution of those who resist.
13. Devil's real happy.
This process happens on an individual level, a family level, a community level and a societal level. The bigger the level the longer it takes, and for it to take effect at the societal, community and family level it must first work on the individual level.
This means you and I must watch for the signs in our own moral life and be alert. Any of us can go down this path, and any of us may be victims of those who are already well down the path of evil and darkness.