Keep yourselves clean.—Isa. 52:11.

Many years before Isaiah wrote the above words, good King Asa vigorously pursued a campaign to root out immorality in Judah. (1 Ki. 15:11-13) And centuries later, the apostle Paul told Titus that Jesus gave himself to cleanse his followers to make them “a people peculiarly his own, zealous for fine works.” (Titus 2:14) In today’s vice-ridden society, it is not easy—especially for youths—to keep morally clean. For instance, all of God’s servants, young and old alike, must battle to keep free from the contamination of pornography that is displayed on billboards, on the TV screen, in films, and particularly on the Internet. Our zeal in heeding God’s warnings can help us to develop a hatred for what is bad. (Ps. 97:10; Rom. 12:9) We need to abhor pornography in order to “break free from its powerful, magnetic pull,” as one Christian expressed it.