300 Foxes and a Donkey's Jawbone
Giving an answer to secular humanists which is Biblically accurate, captures the spirit and the nature of God, and which is in complete harmony with our knowledge of the universe isn't impossible, but it may take some work.
It's one thing to talk about God with Christians, they know God from the Bible. It's something else to talk with people who don't go to church and whose knowledge of God comes from atheist propaganda.
Most people don't believe that hell is real. For most people it's fallen through the cracks of mythology, which is odd because ocean water warming data shows that our oceans are warming from the bottom up.
We (that's me and the Holy spirit) are going to answer the charge that "a good God and hell can't coexist." Hell is a ball of molten radioactive slag at the center of the Earth, it's nothing personal.