In 1 Chronicles 22:17, David commands leaders to help Solomon — the pledge in 29:24 fulfills that command.

In 1 Chronicles 28:21, David says leaders and people will be at Solomon's command — their pledge here confirms that promise.

In 2 Chronicles 30:8, the same Hebrew idiom 'give the hand' means submit to the LORD — directly parallel to pledging submission here.

In Ezekiel 17:18, giving the hand is a pledge of covenant — the same idiom for oath of allegiance as here.

In Ezra 10:19, the exiles give their hand as a pledge to put away foreign wives — same idiom for binding oath.

In 1 Kings 1:50-53, Adonijah submits to Solomon — a specific instance of the general pledge of allegiance from all sons.