The external symbol of our church, Holy Trinity, is the three medallions that represent the Father, the Son, and the Holy Spirit. They are located on the south wall, in the arch that was once the entrance to the church. The context of their appearance is shown on the CREDIT's page, which shows the pink onyx windows surrounding the blue cross of glass, all against a mosaic of blue tiles. The artist used common symbols for Jesus Christ (the Lamb of God) and the Holy Spirit (the dove). His image for God is an old man, implying wisdom and longevity.
This mosaic is a representation of a 14th or 15th century painting or icon, which-- throughout its history--has enjoyed great veneration and fame for associated miracles. It was awarded to the Redemptorist Order by Pope Pius IX in 1865 and is now displayed in Rome in the Church of St. Alphonsus. Copies, such as ours, are still venerated the world over. At Holy Trinity, devotions to Our Lady of Perpetual Help are held every Monday evening.
And how beautiful it is! Here, Our Lord has had a vision of His coming Passion (the angels are showing Him the instruments of His Passion and Death). In His fright, He runs into the lap of his mother, Mary (notice how the sandal hangs from his foot to indicate the speed of his flight to his Mother). Mary, however, is looking not at Jesus but at "us". Can we hear her saying something like this: 'When Jesus was afraid and in need, He came to me, His mother, to find help and comfort--and I am your Mother too...In our own fears and needs, in our own struggles and heartbreaks, why not run to her as Jesus did certain that in her arms, we will find a Mother of Perpetual Help…a mother always there to comfort and console each of us, her children.