Why does Les go back into the book of Acts when teaching about the next order of the resurrection?

He returns to the book of Acts to demonstrate how the next order of resurrection comes about, namely the Body of Christ. The study resumes from 1 Corinthians 15:23 but traces the Acts account to show how that resurrection order is established.

Les explains that they are picking up where they left off in 1 Corinthians chapter 15 and verse 23, but they are going back into the book of Acts. The purpose is to show how this next order of the resurrection comes about, which would be the Body of Christ. This fits his informal Bible study approach as he connects the Acts account with the resurrection order.

Where does Les Feldick go in the Bible to show how the resurrection of the Body of Christ comes about?

The teaching turns to 1 Corinthians chapter 15, verse 23, and also goes back into the book of Acts. This combination is used to show how the next order of the resurrection comes about, namely the resurrection of the Body of Christ.