Matthew Poole and continuators on Judges 3:24

24 When he was gone out, his servants came, and when they saw, that behold the doors of the parlour were locked, they said, Surely he covereth his feet in his Summer-chamber.

This phrase is used only here, and 1 Sam. 24. 3. It is commonly understood in both places, of easing nature; because the men not then wearing Breeches as we do, but long Coats, they did in that act cover their feet, as Women do: But a late judicious Interpreter expounds it, of composing himself to take a little Sleep or Rest, as was very usual to do in the day-time in those hot Countreys, 2 Sam. 4. 5. and 11. 2. And when they did so in cool places, such as this Summer-Parlour unquestionably was, they used to cover their Feet, as appears from Ruth 3. 7. And this may seem to be the more probable, both because the Summer-Parlour was more proper for this use, than for the former; and because this was a more likely reason of their long waiting at his Door, lest they should disturb his repose. And this sense best agrees with Saul's case in the Cave, when being asleep David could more securely cut off the lap of his Garment, 1 Sam. 24. 3. where see my Annotations.

Marginal references: Or, doth his easement.