Judges 6:11
11. there came an angel of the Lord—He appeared in the character and equipments of a traveller (Jud 6:21), who sat down in the shade to enjoy a little refreshment and repose. Entering into conversation on the engrossing topic of the times, the grievous oppression of the Midianites, he began urging Gideon to exert his well-known prowess on behalf of his country. Gideon, in replying, addresses him at first in a style equivalent (in Hebrew) to "sir," but afterwards gives to him the name usually applied to God.
an oak—Hebrew, "the oak"—as famous in after-times. Ophrah—a city in the tribe of Manasseh, about sixteen miles north of Jericho, in the district belonging to the family of Abiezer (Jos 17:2). his son Gideon threshed wheat by the wine-press—This incident tells emphatically the tale of public distress. The small quantity of grain he was threshing, indicated by his using a flail instead of the customary treading of cattle—the unusual place, near a wine-press, under a tree, and on the bare ground, not a wooden floor, for the prevention of noise—all these circumstances reveal the extreme dread in which the people were living. Ruth 3:2
2. he winnoweth barley to-night in the threshing-floor—The winnowing process is performed by throwing up the grain, after being trodden down, against the wind with a shovel. The threshing-floor, which was commonly on the harvest-field, was carefully leveled with a large cylindric roller and consolidated with chalk, that weeds might not spring up, and that it might not chop with drought. The farmer usually remained all night in harvest-time on the threshing-floor, not only for the protection of his valuable grain, but for the winnowing. That operation was performed in the evening to catch the breezes which blow after the close of a hot day, and which continue for the most part of the night. This duty at so important a season the master undertakes himself; and, accordingly, in the simplicity of ancient manners, Boaz, a person of considerable wealth and high rank, laid himself down to sleep on the barn floor, at the end of the heap of barley he had been winnowing.