Even though the law explicitly warned kings against accumulating horses (Deut. 17:16) and wives (Deut. 17:17), Solomon violated both of those commands. 1 Kings 10 reveals that he amassed 1,400 chariots and 12,000 horses (v. 26). He also accumulated 700 wives and 300 concubines (1 Kings 11:3). It was these wives, specifically, that led Solomon astray to following other gods. He even constructed places of worship for some of his foreign wives' gods (vv. 4-8).
