Not everyone who says to Me, ‘Lord, Lord,’ will enter the kingdom of Heaven, but only the one who does the will of My Father (Mt 7:21).
It is actions, not words or official affiliations, particularly in the little necessities of everyday life, that manifest who is the true Christian at heart, because anyone can say words and a multitude of them at that. It is only he or she, however, who truly holds the Spirit of God in their heart and soul, who can genuinely act as a Christian in the true sense of the word.