I think that in the book of Acts, we do see implications of the Homogenous Unit Principle, but I also think its played out a little bit differently:
- Like HUP, we don't see the Gospel jump across huge cultural gaps as much as we see it jump over smaller gaps.
- Unlike common HUP practice, God used bridging people to help the gospel jump these gaps, creating a diverse Church. Philip (a Greek-Jew) is a good example of a bridging person. Compared to a Hebraic Jew, Philip had more in common with Samaritans and the God-fearing Eunuch. God chose to use someone who was closer culturally to the target group to spread the gospel. This might not sound too convincing here, so please watch my video where I explain this much more clearly!