We believe in the
Communion of Saints. This is the apostolic faith, not something that came afterwards. In fact, the term “saint” in itself is found in previous books of Scripture.
Examples: Deuteronomy 33:3 (“He hath loved the people, all the saints are in his hand”), 1 Samuel 2:9 (“He will keep the feet of his saints, and the wicked shall be silent in darkness”), 2 Chronicles 6:41 (“let thy priests, O Lord God, put on salvation, and thy saints rejoice in good things”), Psalm 30 (“Sing to the Lord, O ye his saints”), Psalm 33 (“Fear the Lord, all ye his saints”), Psalm 49 (“Gather ye together his saints to him: who set his covenant before sacrifices”), Psalm 96 (“the Lord preserveth the souls of his saints”), Psalm 149 (“Sing to the Lord a new song, And His praise in the assembly of saints …] To execute on them the written judgment— This honor have all His saints.”), Psalm 150 (“Praise the Lord in His saints”), Tobit 2:18 (“we are the children of the saints”), Judith 6:15 (“O Lord God of heaven and earth, behold their pride, and look on our low condition, and have regard to the face of thy saints”), Job 15:15 (“Behold among his saints none is unchangeable, and the heavens are not pure in his sight.”),
Including the living saints of the Church Militant (men in state of grace), the holy souls in the state of purgatory (Church Penitent) and the holy souls admitted to the Beatific Vision in the state of heaven (Church Triumphant).
Now it is to be clarified what “saint” means: “chosen”, “elect”, “set apart”. It is not necessarily an indication of being in heaven, nor an indication of being perfect. In fact, the Catholic Church sings to Christ in the Gloria: “
tu solo Sancuts”, “you alone are saint” or “you alone are the holy one”. But it is to be understood that a saint is one consecrated, set apart. A baptized is indeed a partaker of the very divine nature and a member of the body of Christ. Or as Peter writes in 1 Peter 2:9: