She brought forth butter - As the word חמאה chemah, here translated butter, signifies disturbed, agitated, etc., it is probable that buttermilk is intended. The Arabs form their buttermilk by agitating the milk in a leathery bag, and the buttermilk is highly esteemed because of its refreshing and cooling quality; but there is no reason why we may not suppose that Jael gave him cream: Sisera was not only thirsty, but was also exhausted with fatigue; and nothing could be better calculated to quench his thirst, and restore his exhausted strength, than a bowl of cream. I am surprised that Mr. Harmer should see any difficulty in this. It is evident that Deborah wishes to convey the idea that Jael was more liberal and kind than Sisera had requested. He asked for water, and she brought him cream; and she brought it to him, not in an ordinary pitcher, but in the most superb dish or bowl which she possessed. See at the end of Judges 4:24; (note).
Butter - Rather curdled milk, probably a fermented and intoxicating drink. All these marks of respect and friendship would lull Sisera into security.