2 Samuel 3:35
And when all the people came to cause David to eat meat while it was yet day, David sware, saying, So do God to me, and more also, if I taste bread, or ought else, till the sun be down.
Cross-reference
In 2 Samuel 3:9, Abner uses the same oath formula 'May God do so to me and more also' — a common Hebrew expression of self-imprecation.
In 2 Samuel 1:12, David and his men also fast until evening in mourning — paralleling David's grief-fast for Abner.
In 2 Samuel 12:17, David refuses food while mourning his child—same pattern of fasting in distress as here.
In Ruth 1:17, Ruth utters the identical oath formula, pledging loyalty to Naomi — showing the same phrase used in a covenant context.
In 1 Samuel 3:17, Eli uses the same oath formula to compel Samuel to speak — another instance of this imprecatory oath.
In 1 Samuel 20:13, Jonathan swears with the same phrase to David — reinforcing the prevalence of this oath in relationships.
In 1 Kings 2:23, Solomon uses the identical oath when pronouncing judgment — a later king employing the same formula.
In 2 Kings 6:31, King Joram uses the same self-imprecating oath against Elisha — showing the formula in a different context.