Judges 18:10

“When ye go, ye shall come to a people secure, and to a large land, etc.] For though it was but one city, the territories of it were large, and the villages belonging to it might be many; which, with the security of the people, might easily be surprised and taken, not being upon their guard, are the arguments used by the spies to encourage their countrymen to go up and take it, to which they add others: for God hath given it into your hands; which they concluded from the state and condition they found the people in, thoughtless and defenceless; or it may be on account of the oracle in Micah’s house they had consulted, and to which they gave credit; though some think their faith was grounded…”

“Given - This they gather partly from God's promise which they supposed they had from the Levite's mouth; and partly from his providence, which had so disposed them, that they would be an easy prey. Judges 18:12”

“secure: Jdg 18:7, Jdg 18:27 God hath: Deu 2:29, Deu 4:1; Jos 6:16 where there: Exo 3:8; Deu 8:7-9, Deu 11:11, Deu 11:12; Eze 20:6; Ti1 6:17 Judges 18:11”

“"When ye arrive, ye will come to a secure people (i.e., a people living in careless security, and therefore very easy to overcome); and the land is broad on both sides (i.e., furnishes space to dwell in, and also to extend: vid., Gen 34:21; Ch1 4:40); for God has given it into your hand." They infer this from the oracular reply they had received from the Levite ( Jdg 18:6). "A place where there is no want of anything that is in the land (of Canaan)." Judges 18:11”