1 Kings 1:13

Didst not thou swear, i.e. Thou didst swear; which David himself owneth, 1 Kings 1:30, which probably he did to satisfy Bath-sheba's doubts and fears about it, and to oblige himself to a compliance with the Divine will declared about it. See 1 Kings 2:15 1 Chronicles 28:5. Thine handmaid; so she calleth herself, to testify her reverence and subjection to him, not only as her husband, but as her king. He shall sit upon my throne; another expression of the same thing, to signify David's sincerity and fervency in his swearing, which adds to his obligation. Why then doth Adonijah reign? how comes this to pass? or why dost thou suffer it?