Related
Symbol of St. Mark: lion, with (1) baptismal font, (2) cushion [bed of the paralytic], (3) fleeing devil, (4) sack of seeds, barrel [bushel?], (5) bust of a woman, (6) prophet, the head of St. John the Baptist on a platter
Symbol of St. Luke: ox, with (1) St. Gabriel, (2) Christ-child holding sceptre and knife, (3) baptismal font, (4) Christ drives the devil away, (5) cushion [bed of the paralytic], fishing net, (6) opened book, seven candles
Symbol of St. Matthew: angel, with (1) Christ-child and kneeling angel, (2) three crowns, (3) baptismal font, (4) devil swaying stones, (5) opened book, seven candles, (6) bird (dove?) picking bread
Symbol of St. John: eagle, with (13) wash basin, (14) heart, (15) vine-tendril, (16) Jew-hat, (17) paten, (18) Garden of Gethsemane, (19) mocker, (20) three ointment-jars, (21) Christ puts two fingers [of Thomas] in his wound
St. John the Evangelist with his symbol the eagle (2nd of 4)
Symbol of St. Matthew: angel, with (13) sack of seeds, (14) five loaves [without fishes], (15) the [unwashed] hand, head of dog having bread [of the children] in its mouth, (16) Jonah is cast up by the great fish, key [attribute of St. Peter], (17) sun, (18) Christ-child with seven keys
Symbol of St. John: eagle, with (7) banner of the Agnus Dei (without lamb), (8) couple committing adultery (both holding a torch), (9) eye, (10) shepherd's crook, (11) skull, (12) ointment-jar
Symbol of St. Luke: ox, with (7) ointment-jar, (8) sack of seeds, ship, (9) five loaves [without fishes], key [attribute of St. Peter], sun, (10) woman [St. Martha or St. Mary Magdalene], sword, (11) devil, prayer chain/rosary, (12) heart, [treasure?-]chest
Design drawing for stained glass window with 3 columns of saintly symbols: shells = James the Elder; caught fish = Simon; St. Andrew's Cross = Andrew, etc.
Symbol of St. John: eagle, with (1) the Trinity (the Holy Spirit as a dove), (2) six wine jars, (3) crown, (4) bucket, (5) fish, (6) five loaves and two fishes, Host
Summary
The concept of the Trinity is a central doctrine of Christianity that refers to the belief in one God who exists as three distinct persons: the Father, the Son (Jesus Christ), and the Holy Spirit. The three persons of the Trinity are equal in power and glory, and yet distinct in their roles and relationships with one another. The Father is the source of all that exists, the Son is the redeemer of humanity, and the Holy Spirit is the comforter and guide of the Church. The doctrine of the Trinity is rooted in the teachings of Jesus and the apostles, as well as in the early Christian Church's reflection on the nature of God and on the experience of God's presence in the world. The Trinity is a mystery that transcends human understanding and cannot be fully grasped by the human mind.