If God is unchanging, did he have a body eternally, and how does the incarnation relate to God being eternal?, What is the best way to explain the Trinity to younger students?, Given that the tree of knowledge of good and evil was where sin came from; could God have created the Garden of Eden without it?, and more on today's Open Line with Fr. John Trigilio.

Why did the Protestants break off from the Catholic Church and are they close to reunification? Is a confession invalid if the priest can't hear all of our sins? What does mortification of the senses mean? and more on today's Open Line with guest host Dr. David Anders.

Why should we appeal to natural law in moral debates? How do you respond to Protestants about Judith and the deuterocanonical books being historically inaccurate? Where did the thief on the cross go? and more on today's Open Line with Fr. John Trigilio.

Is it okay to listen to a recitation of the Rosary with my headphones while praying the Rosary? Can I be a Catholic, with next to no Marian Devotion? Did Jesus descend to a physical hell? and more on today's Open Line with Fr. John Trigilio.

What is your advice for someone about to receive the Eucharist for the first time? How can I evangelize a Christian neighbor of mine without pushing her away or ruining the friendship? Is it good to pray the same prayers for years or can I mix it up? and more on today's Open Line with Guest Host Dr. David Anders.

Will one mortal sin actually send someone to hell? Could a civilian leader end the Great Schism? What is Lent about? and more on today's Open Line with guest host Dr. David Anders.

Are Protestant baptisms valid? Can you explain the difference between veneration and worship of the saints? When is it permissible for laypeople to baptize? and more on today's Open Line with Fr. John Trigilio.

Is there a hierarchy in the Trinity?

Why did they eliminate the Season of Septuagesima from the church calendar? How are we meant to understand the terms “binding” and “loosing” in the gospel of Matthew? Before a saint is canonized, can we ask someone who is dead to pray for us if we don’t know if they are in heaven with God? and more on today's Open Line with Fr. John Trigilio.

Why are we being dared to say the Our Father? Why do we no longer say the word One in the Collect, as in one God forever and ever? Is the Eucharist necessary for salvation? and more on today's Open Line Monday with Fr. John Trigilio.