Went up to the house of God - Some think that a deputation was sent from Shiloh, where Phinehas the high priest was, to inquire, not concerning the expediency of the war, nor of its success, but which of the tribes should begin the attack. Having so much right on their side, they had no doubt of the justice of their cause. Having such a superiority of numbers, they had no doubt of success. See the note on Judges 20:1.
And the Lord said, Judah - But he did not say that they should conquer.
Went up to the house of God - It should be “to Bethel.” At this time the ark was at Bethel (compare 1 Samuel 10:3), and not at Shiloh. It is not unlikely that though Shiloh was the chief residence of the ark Jeremiah 7:12, yet the tabernacle, being moveable, was, either at stated times, or as occasion required, moved to where the Judge resided, or the congregation assembled (compare 1 Samuel 7:16). On the present occasion the ark may have been moved to Bethel for the convenience of proximity to the great national council at Mizpeh.