1 Therefore, I urge you brothers through the compassions of God to present your bodies as living, holy sacrifices, well pleasing to God, which is your spiritual service. 2 And do not be conformed to this age, but be transformed by the renewing of your mind that you may discern the will of God, that which is good and well pleasing and perfect. Romans 12:1-2 (translated from the NA28 Greek text)
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. They will love what He loves and hate what he hates. God is love, but He hates a certain type of love.