These are mentioned in scripture:
1. As the insignia of office; Joseph and Daniel were invested with gold chains (Gen. 41:42; Dan. 5:7).
2. As ornaments: they were placed on parts of the temple; were worn on the neck, and found among the spoils of war: (Ex. 28:14; Num. 31:50; 2 Chron. 3:5,16; Song of Sol. 1:10).
3. Used to secure prisoners (Jer. 39:7; Lam. 3:7; Acts 12:6; 2 Tim. 1:16; Jude 6).