1 Kings 14:31 provides the context: Rehoboam dies and Abijam succeeds, which this verse then dates to Jeroboam's 18th year.

1 Chronicles 3:10 places Abijam in the Davidic lineage, confirming his royal descent from Solomon.

2 Chronicles 11:20 names Maacah as mother of Abijah (Abijam), providing the family line for his reign.

2 Chronicles 13:1-22 expands on Abijam's reign with battle details, complementing the brief introduction here.