Natural lusts please man; spiritual desires please God.
And they that are Christ’s have crucified the flesh with the affections and lusts. (Galatians 5:24 KJV)
Families often have identifying markers or characteristics that weld them together. Often siblings look similar physically to each other and to their parents. These physical characteristics often identify family members apart from others.
Living in God’s spiritual family leaves identifying marks or spiritual features eternally stamped upon the lives of His own. Those who profess an identity with Christ have an aroma of God lingering about their life. Living a crucified life appeals to the righteous desires of a godly nature, repelling sin and ungodliness, nourishing crucified flesh to bloom with spiritual things of God. Dying to sin is both a new positional standing in God through salvation, along with a daily fellowship with God, bringing death to temptations and darkness which flourish in this world.
Those who are busy about feeding the desires of their natural sinful nature, rather than nurturing a new spiritual nature from God, also have a distinct marking. They reek of the stench of death which springs forth darkness from within their heart as they dwell in this world.