One of the means by which God communicates with men (Gen. 15: 12; Gen. 20: 3-7; Gen. 28: 12-15; Gen. 31: 24; Gen. 37: 5-10; Gen. 40: 5; Gen. 41: 1-28; Judg. 7: 13; 1 Kgs. 3: 5; Dan. 2: 1; 4; Matt. 1: 20; Matt. 2: 12, 13, 20; Matt. 27: 19; 1 Ne. 3: 1-2; 1 Ne. 8: 2).