I appeal to you therefore, brothers, by the mercies of God, to present your bodies as a living sacrifice, holy and acceptable to God, which is your spiritual worship. Do not be conformed to this world, but be transformed by the renewal of your mind, that by testing you may discern what is the will of God, what is good and acceptable and perfect. Romans 12:1–2, ESV
One of the markers of genuineness in a Christian is separation from the World. This isn’t a physical removal from planet Earth or a disintegration of the body of a Christian. A genuine Christian’s character should be in a continual upgrade unto Christlikeness. That means that as he or she cooperates with God in their sanctification, working out their salvation with fear and trembling, their character will take on more and more of Christ’s character instead of being patterned after the world and its ways. They will love what He loves and hate what he hates. God is love, but He hates a certain type of love.