Have diminished thine ordinary - חקך chukkech means here the household provision made for a wife - food, clothing, and money.
Have diminished thine ordinary food - As a husband lessens the things which minister to the luxury of an unfaithful wife, so did the Lord cut Israel short in consequence of her unfaithfulness.
Daughters - The small cities. The Philistines have left a permanent record of their supremacy in the name of the holy land - Palestine. It was a special shame to be subjected to so small a power as that of Philistia (see Isaiah 14:29); but the very Philistines were ashamed of Judah‘s unfaithfulness, and were themselves truer to their false gods than Judah was to Yahweh.