Separation is the outcome of separation! When a nation (i.e., Israel in the Old Testament) or an individual (i.e., a believer in the New Testament) is set apart by the Lord, that nation (or person) has become disassociated with the rest of the world. Moses made this point in Exodus 33:16 when he said, “For wherein shall it be known here that I and thy people have found grace in thy sight? is it not in that thou goest with us? so shall we be separated, I and thy people, from all the people that are upon the face of the earth.” Separation is not something accomplished through diligence but occurs naturally after a person comes to know Christ as Saviour. Christians who remain attached to the world find little satisfaction with the things of the world or less appeal for the things of God.
The Lord is a jealous God (Exodus 34:14). He calls upon His people to follow Him with an undivided heart. One facet of our calling involves hating evil. Our love for the Lord will naturally breed a hatred for the things of this world. Throughout the psalms, we find statements of hatred from the people of God. They hated “the congregation of evil doers” (Psalm 26:5), “them that regard lying vanities” (Psalm 31:6), “the work of them that turn aside” (Psalm 101:3), “every false way” (Psalm 119:104, 128), “vain thoughts” (Psalm 119:113), and “covetousness” (Proverbs 28:16). God never intended for these truths to be limited to His children in Old Testament times. Just as the Bible commands that we should love the Lord and the brethren, it also commands that we should hate things contrary to the Lord.