"Nevertheless the solid foundation of God stands, having this seal: “The Lord knows those who are His,” and, “Let everyone who names the name of Christ[a] depart from iniquity.” 2 Timothy 2:19
Faith is the passport of entry to the Kingdon of God. Celestial citizenship gives us rights and privileges, but also responsibilities. For this, there must be a great difference between God's Kingdom's citizens and those of this world.