Verses with the word preparation in the Old Testament (2 verses):

1 Chronicles 22:5
And David said, Solomon my son is young and tender, and the house that is to be builded for the LORD must be exceeding magnifical, of fame and of glory throughout all countries: I will therefore now make preparation for it. So David prepared abundantly before his death.

Nahum 2:3
The shield of his mighty men is made red, the valiant men are in scarlet: the chariots shall be with flaming torches in the day of his preparation, and the fir trees shall be terribly shaken.