en_tn/act/15/39.md

sharp disagreement

Paul and Barnabas could not come to an understanding or agreement.

that they separated

"that Barnabas and Paul separated"

and sailed away

"and they sailed away" (See: rc://en/ta/man/translate/figs-ellipsis)

by the brothers

"by the believers at Antioch"

went through Syria and Cilicia

These are provinces in Asia Minor, north of the island of Cyprus.

strengthening the churches

"making the churches spiritually strong"