Hi, Christina!
Here’s the passage:
23 But others save, pulling them out of the fire. And on others have mercy, in fear, hating also the spotted garment which is carnal.
We are to not just be content that we are Saved by Jesus–we are to Witness to the world and assist others in their Salvation.
Some we are to have mercy upon–allowing that Mercy (God’s) to work both in us and in them as we help Guide them to (or back) Christ; others we are to assist with great care not to fall in their wickedness and corruption hating even that which is part of their world/corrupt principles.
Abortion, homosexuality, adultery, fornication, and other ills are at times seen only through the lens of “mercy,” “justice” or “charity.” Yet, instead of correcting these we can falter, through a misplaced sense of “love” or “respect” or “sensibility,” and actually enable rather then correct.
A brutal example:
In some places of work people speak and do things that are immoral; a Christian cannot become part of that behavior in order to “not judge” or “fit in” or “bring others to Christ.”
With love and compassion we can reject that behavior without seeming to be pious (better than).
And you are correct, not supporting secular values (books, tv programs, etc.) is "hating the garment (hating the sinful man/woman) as we strive to remain Christians and give Witness to Christ.
Maran atha!
Angel