Christian theosophy is so weird that debates with them don't interest me much. I remember when I was 8 years old, concluding that the people in church didn't really know about God. I figured if there is a God, that would be most important to know, but I would not find out in church.
Then during college I got deeply into yoga, having discovered it as a way to directly perceive reality. My environmental science degree made me feel hopeless for the world because of too many people eating meat, which is causes an extreme burden on the planet, so I dedicated myself to yoga with no other interest. That led me to finding a used copy of Bhagavad-gita As It Is and seeing Krishna in person after a week of carefully studying it.
Anyway, I don't believe debating is a reliable method for getting to the truth of the question of God. Many people assume that the universe should reveal God, but the Vedas describe the purpose of the universe to conceal God. Therefore if anyone wants to avoid accepting God, it is easily done. Creation exists exactly for that purpose, among others, according to the Vedas.
Someone may challenge that the Vedas are just ignorant stories, but their Sanskrit composition proves to me that they were given for people of far superior intelligence, what to speak of the intelligence of their source.