Then there arose also a quarrel among them

"Then the apostles began to argue among themselves"

was considered to be greatest

This can be stated in active form. AT: "was the most important" or "the people would think was most important" (See: rc://en/ta/man/translate/figs-activepassive)

"Jesus said to the apostles"

"rule forcefully over the Gentiles"

The people probably did not think of those rulers as people who do good to their people. AT: "like to be called" or "call themselves"