2 Chronicles 13:7
And there are gathered unto him vain men, the children of Belial, and have strengthened themselves against Rehoboam the son of Solomon, when Rehoboam was young and tenderhearted, and could not withstand them. (2 Chronicles 13:7)
Young and tenderhearted.
 In the sense that he was inexperienced. Rehoboam was 41 years of age when he began to reign (ch. 12:13).
Children of Belial.
 Literally, “sons of worthlessness” (see on Deut. 13:13; Judges 19:22; 1 Kings 21:10).