So think clearly and exercise self-control. Look forward to the gracious salvation that will come to you when Jesus Christ is revealed to the world. So you must live as God’s obedient children. Don’t slip back into your old ways of living to satisfy your own desires. You didn’t know any better then. But now you must be holy in everything you do, just as God who chose you is holy. For the Scriptures say, “You must be holy because I am holy.” 1 Peter 1:13-16
For the word of God is living and powerful, and sharper than any two-edged sword, piercing even to the division of soul and spirit, and of joints and marrow, and is a discerner of the thoughts and intents of the heart. Hebrews 4:12
However, in the church environment and out of the church environment, we became Modesty Police. If we saw sexually explicit magazines in the grocery aisle checkout line, we turned those magazines over so that people couldn't see the front cover. Our children were trained to be on the lookout for inappropriately dressed people whenever we watched shows on tv or movies. If something inappropriate showed up on the screen, someone immediately got up and turned the channel or fast forwarded the scene. If we saw inappropriately dressed people in smaller confines, ie, Baskin Robbins, it would be safer to wait outside until those people left before entering the store. Those are the kinds of things we did in order to avoid immodesty in the world around us and "protect" our children.