Great passed through in 334 BC he offered to pay for the cost of a new construction, provided it was dedicated to him. The Ephesus people declined, and rebuilt it with great success. When the Romans made Ephesus their provincial capital, it became a busy town with great commercial, trading and political importance, and a population that grew to around 250,000. A significant Christian community grew, and the city was visited by St John the Evangelist in the 1st century, then by St Paul, who was there between 51-53 AD and wrote some of his epistles. It was also the venue of two Ecumenical Councils. But the success of Roman Ephesus began to dwindle, mainly because of problems connected to the harbour, which was the main source of trade. The Cayster River was pushing silt up the harbour and despite attempts to dredge it and rebuild the harbour, the sea was pushed back to Pamucak, 4km away, and therefore Ephesus lost its source of wealth. By the 6th century, the city was unliveable and was shifted near to St John’s Basilica, and by 1090 it was taken over by the Turks.