“And on the sabbath we went out of the city by a river side, where prayer was wont to be made; and we sat down, and spake unto the women which resorted thither.”
King James Version (KJV)
16:13 We went out of the gate - The Jews usually held their religious assemblies (either by choice or constraint) at a distance from the heathens: by a river side - Which was also convenient for purifying themselves. Where prayer was wont to be made - Though it does not appear there was any house built there. We spake - At first in a familiar manner. Paul did not immediately begin to preach.
Ac 16:13 Went out . . . by a river side. The Ganges, a small river which flows by the city. Where prayer was wont to be made. Where there was a praying place. There seems to have been no synagogue, but a few pious Jews, women at least in great part, met on the river banks, out of the city, for prayer. Spake unto the women. Either Jewish women, or proselytes to the Jewish faith.