Eldridge estimates he'll have spent close to 3,000 hours on the project by the time he's finished.

"For me to create this design, I did countless hours of research and continue to do so to make sure I'm depicting my interpretation of the Divine Mercy properly and accurately based on Sister Faustina," he said.

Sister Faustina Kowalska was a Polish woman assigned to a parish in Lithuania.

In 1931, Kowalska said she had a vision of Christ, who said to create a painting of him — with the two beams — and to call it "Divine Mercy." The red beam is said to represent blood and the white or pale one symbolizes water. It was to be accompanied with a banner with the "Jesus, I trust in you" message.

The parish commissioned the painting to be made, which Kowalska saw before her death in 1938. 

She was only 33 years old.

Decades later, Pope John Paul II canonized her and she became Saint Maria Faustina Kowalska.

Besides the depiction of Christ with the two beams coming from his heart, Eldridge has added other elements to the main window.

The elements include shamrocks reminiscent of Saint Patrick of Ireland, for whom the Fremont church is named.

He's added five-pedal white roses from the story of Our Lady of Guadalupe, which is especially meaningful to Hispanic parishioners.