We are influenced by those we are around the most. You may think you are holding your own, but even if it is ever-so-slightly, bits and pieces of their behavior will begin to take root. One example might be your friends and the things they like to do. They may like to party on the weekend, and you go along with it just so you can be around them. When you grow up, you realize what you actually enjoy, and those friendships grow stale; it’s not because you dislike them, it’s merely that you’ve grown in a different direction. The more you fill your head with the truths of God’s word, and take them to heart, the more distance you will put between you and those who believe differently from you. This is why we have different denominations in the church, some believe only certain parts of the Bible, while others believe in the whole thing, every jot and tittle. When the Lord opens your eyes to His truths, you will want to be around others who believe the same way.
Whoever walks with the wise becomes wise, but the companion of fools will suffer harm. Proverbs 13:20.