2 Kings 10:20
And Jehu said, Proclaim a solemn assembly for Baal. And they proclaimed it.
Cross-reference
1 Kings 18:19 describes Elijah summoning Baal prophets to Carmel—parallel to Jehu's call for a Baal assembly.
1 Kings 18:20 records the gathering of Baal prophets to Carmel—a direct parallel to Jehu's proclaimed assembly.
Joel 1:14 uses the same phrase 'sanctify a solemn assembly'—but for the LORD, contrasting with Jehu's for Baal.
Joel 2:15 also calls for 'solemn assembly'—but for repentance, contrasting with Jehu's call for Baal worship.
Romans 11:4 cites the remnant not bowing to Baal—contrasting with the Baal worshippers Jehu gathers here.
Exodus 32:5 similarly proclaims a feast to the LORD for the golden calf—a false worship gathering like Jehu's for Baal.
Leviticus 23:2 defines holy convocations for the LORD—contrasting with Jehu's misuse of the concept for Baal worship.