## Paul completed his ministry  ##

Paul completed the work that God had for him to do in Ephesus.

## Macedonia and Achaia ##

These provinces are modern day Greece.

## he decided in the Spirit  ##

Possible meanings are 1)  Paul decided with the help of the (Holy) Spirit" or 2) the Spirit led Paul to decide.

## I must also see Rome ##

"I must also travel to Rome"

## But he himself stayed in Asia for a while. ##

It is made explicit in the next few verses that Paul was staying in Ephesus.