Christians are not to be part of the world, not the earth. The Earth was created by God and it is good.  The World (created by man) is evil.    Matt 5:5 Blessed are the meek,     for they will inherit the earth. Why would the meek inherit the earth if God does not want us to be part of the earth? Too many times Christians assume the world and the earth are the same thing, they are not.  We are told to walk with Him in the here and now. This is our home. The kingdom of heaven is already here. Luke 17:21 nor will they say, ‘See here!’ or ‘See there!’ For indeed, the kingdom of God is within you. We are spirit beings dwelling in a physical body. When our body dies we live on in a new body. Think of a baby in its mother's womb. . He is not designed to live there forever but only for a time. When he dies to that world he is  born into a new world. Death is separation. Those dead in Christ are separate from Christ Those dead in the body but joined to Christ  are separate from their body and yet they live..