ba.da describes forming something from one's own heart, whether a calendar month or a report.

The attested use describes forming something from one's own heart: a month chosen for a feast and reports asserted without basis.

1. Forming something from one's own heart · dominant

   In 1 Kings 12:33, the Qal perfect occurs in the clause about the eighth-month date chosen for the feast; the APB renders the clause "the month he had devised from his heart alone." In Nehemiah 6:8, the Qal active participle construct characterizes the reports being alleged; the APB renders, "you are inventing them from your own heart."

   1 Kings 12:33Nehemiah 6:8

In the Anselm Project Bible: The APB presents the action as "devised" for the month in 1 Kings 12:33 and "inventing" for the reports in Nehemiah 6:8. These renderings confirm the clauses' overall presentation rather than isolate a precise English equivalent.