Amos 4:8 - Albert Barnes' Notes on the Bible

Two or three cities wandered into one city - Those then who were punished, were more than those who were reprieved. The word “wandered” literally, “trembled,” expresses the unsteady reeling gate of those exhausted, in quest of food . They staggered through weakness, and uncertain, amid the general drought, whither to betake themselves. This was done, not in punishment but to heal. God paused, in order to give them opportunity to repent; in deed, His long-suffering only showed to themselves and to others, that they would not; “and ye returned not not Me; saith the Lord.”