Jamieson, Fausset and Brown on Judges 6:19-23

19-23. Gideon went in, and made ready a kid; ... the flesh he put in a basket, and he put the broth in a pot--(See on Ge 18:7). The flesh seems to have been roasted, which is done by cutting it into kobab, that is, into small pieces, fixed on a skewer, and put before the fire. The broth was for immediate use; the other, brought in a hand-basket was intended to be a future supply to the traveller. The miraculous fire that consumed it and the vanishing of the stranger, not by walking, but as a spirit in the fire, filled Gideon with awe. A consciousness of demerit fills the heart of every fallen man at the thought of God, with fear of His wrath; and this feeling was increased by a belief prevalent in ancient times, that whoever saw an angel would forthwith die. The acceptance of Gideon's sacrifice betokened the acceptance of his person; but it required an express assurance of the divine blessing, given in some unknown manner, to restore his comfort and peace of mind.