…when we were still powerless, Christ died for the ungodly (Romans 5:6). A big thing going on in this verse is the death of Jesus for us when we were sinners. We often miss the “at just the right time” bit. Jesus died in accordance with God’s purposes and plans AND at a time historically that was ripe for the rapid spreading of the gospel of Jesus’ death and resurrection.
The Roman Empire was enjoying widespread peace (pax romana) meaning that there was safe road travel. The Greek language was in widespread usage and the Old Testament had already been translated into Greek (LXX). And the Jewish synagogues throughout the Mediterranean provided a platform for proclaiming Jesus.