These are -
1) Acombination of Chi (X), Rho (P), Alpha (A), Chi-Rho (X and P) is a symbol for Christ. It is the monogram abbreviation of the Greek word Christ -XPISTOS. Alpha (A) and Omega (W) are the first and last letters of the Greek alphabet. They are an ancient emblem of God, and particularly of Jesus
Christ, Second Person of the Blessed Trinity, symbolizing the beginning and the end.
2) Representing the Old Testament: two tablets of the law upon which the Lord inscribed the Ten Commandments given to Moses. The first tablet contains the three commandments regulating our relationship with God: the second, the commandments referring to our relationship with each other.
3) IHS is an abbreviation of the Greek word IHCOYC; it is a common symbol for the Holy Name of Jesus. The abbreviations consist of the first two and last (or first three) letters of IHCOYC ( IESOUS) - JESUS. The letter sigma (C in cursive Greek script)) becomes ‘S' in the Roman alphabet. The symbol dates back to the days of the Catacombs and gained great popularity after the 12th century, when St. Bernard fostered devotion to the Holy Name. St. Ignatius Loyola adopted the monogram as part of the seal of the Society of Jesus.
4) The next panel teaches us the three Christian virtues infused in our souls at Baptism: Faith, symbolised by the Cross: Hope, by the Anchor; and Charity, by the burning torch.
5) The fifth panel is the outstanding ancient symbol of the Holy Eucharist. It is taken from the Catacombs of St. Callistus. The fish represents Christ, As an acrostic, the Greek word for fish, IXOYC, yields the initials of the words -
A symbol so simple and so meaningless in itself and yet having so much significance to those who knew, could not but serve as a sign in a multitude of ways. And so it did. It is a very common sign in the Catacombs. The representation of the fish and the baskets signifies that Christ Himself brings to the faithful. His Body (Bread) and Blood (Wine). In all symbols of this kind the fish is shown with its head above the water
6) The last panel which shows a crown intertwining a lily branch indicates the rewards of the faithful in heaven