'Unsuspecting' in the Bible

Gideon went up by the way of those who lived in tents on the east of Nobah and Jogbehah, and attacked the camp when the camp was unsuspecting.

“Recently My people have arisen as an enemy—You strip the robe off the garmentFrom unsuspecting passers-by,From those returned from war.

For such men are slaves, not of our Lord Christ but of their own appetites; and by their smooth and flattering speech they deceive the hearts of the unsuspecting.