People in the world are generally quite self-centered. Even saved people are often lovers of their own selves instead of preferring one another.
Do you want God's respect? The Lord said, “to this man will I look, even to him that is poor and of a contrite spirit, and trembleth at my word.”
Although there are times where God respects some while rejecting others, God’s acceptance of one and rejection of another is never a baseless respect.
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.
