Yahweh said that on the day of Yahweh, the sun would set at noon, so that the earth would be dark during the normal daylight hours. Yahweh was going to turn joyful feasts into times of mourning, since their songs would be lamentations. Everyone would wear sackcloth and be bald. The mourning and weeping would be like for an only son. Yahweh was going to bring an end to a bitter day.
All these seamen onlookers lamented and mourned for Tyre. They wailed loudly and cried bitterly over Tyre. In typical mourning fashion, they put dust on their heads and wallowed in ashes. They made themselves bald and put on sackcloth. They wept with a bitterness of soul in their mourning. They lamented over Tyre. They wondered if anyone had ever been destroyed on the high seas like Tyre.
This short chapter on the Philistines ends with the mention of a couple of the five main Philistine cities, mentioned from the time of Joshua, chapter 13. Ashkelon and Gaza were still standing, but as defeated cities, as Jeremiah mentioned here. Gaza was bald and Ashkelon was silent, since they were only a remnant of their former power. How long would they be in mourning? Would Yahweh put his sword away? These seaside cities were in ruin. Gath and Ashdod were not mentioned here, because they were completely destroyed by the Egyptians in the 7th century BCE.