How much should we focus on history vs. theology when presenting and discussing the gospel?

How much should we focus on history vs. theology when presenting and discussing the gospel?
What happens to people with no access to the gospel? Is it just for God to punish them for their sin?
What’s a covenant, and do Christians have to keep the Old Covenant?
The Gospels are unique, and in order to read them well and not create problems where none exist, we need to know what they are!
Can we walk through a door to have our sins forgiven at the Vatican? And what does the answer to this tell us about what Jesus did on the cross?
Was it child abuse for God the Father to send the innocent Son to die for the crimes of guilty people?