We must separate ourselves from whatever is not like God. We must also separate ourselves unto God. This means that we most make ourselves only available to God. God uses people that have mad themselves available to him.
2 Corinthians 6:17
"Therefore come out from them and be separate, says the Lord...”
God has always required His people to separate. He told Israel, “be ye holy, for I am Holy.”
God knows that we become like, whoever and whatever we spend the most time with. God wants us to be like Him,