They fought from heaven; the stars in their courses fought against Sisera.

War from heaven was made against them, the stars remaining in their order and courses fought against Sisara.

From the heavens they fought: The stars from their highways fought with Sisera.

The stars from heaven were fighting; from their highways they were fighting against Sisera.

The conflict against them was from heaven. The stars, remaining in their order and courses, fought against Sisera.

God fought on the side of Israel, and gave them the victory. Josephus relates that, just as the battle began, a violent tempest came on with a great downfall of rain; and a hailstorm, which, driving full in the faces of the Canaanites, so blinded and benumbed them with cold, that they could neither use their bows with effect nor even hold their swords.

They fought from heaven - The angels of God came to the assistance of Israel: and the stars in their orbits fought against Sisera; probably some thunder storm, or great inundation from the river Kishon, took place at that time, which in poetic language was attributed to the stars. So our poet sung relative to the storms which dispersed the Spanish armada in 1588: -
"Both winds and waves at once conspire
To aid old England - frustrate Spain's desire."
Perhaps it means no more than this: the time which was measured and ruled by the heavenly bodies seemed only to exist for the destruction of the Canaanites. There may be also a reference to the sun and moon standing still in the days of Joshua.

They fought from heaven,.... Either the angels of heaven, afterwards called stars; or the heavens, the elements, fought for Israel, and against Sisera; a violent storm of rain and hail falling at this time, which discomfited Sisera's army; See Gill on Judges 4:15, or this victory was obtained in such a manner as plainly showed it was not of man, but of God from heaven; so the Targum,"from heaven war was made with them;''with the kings before mentioned; God fought against them, and no wonder they were conquered:
the stars in their courses fought against Sisera it seems as if it was in the night that this battle was fought, at least that the pursuit lasted till night, when the stars by their brightness and clear shining favoured the Israelites, and were greatly to the disadvantage of the Canaanites; unless it can be thought, as is by some, that the stars had an influence to cause a tempest of rain, hail, thunder, and lightnings, by which the army of Sisera was discomfited in the daytime, as before observed.

the stars in their courses fought--A fearful tempest burst upon them and threw them into disorder.

For not only did the Israelites fight against them, but he powers of heaven also. "From heaven" is more minutely defined by "the stars from their courses." These words explain the statement in Judges 4:15, "the Lord discomfited Sisera;" though in our opinion not so clearly as to enable us to define more precisely the natural phenomenon by which God threw the enemy into confusion. In all probability we have to think of a terrible storm, with thunder and lightning and hail, or the sudden bursting of a cloud, which is poetically described as though the stars of heaven had left their courses to fight for the Lord and His kingdom upon earth.

From heaven - Or, they from heaven, or the heavenly host fought, by thunder, and lightning, and hail - stones, possibly mingled with fire. The stars - Raising these storms by their influences, which they do naturally. Courses - Or, from their paths, or stations. As soldiers fight in their ranks and places assigned them, so did these.