1 Kings 8:54

If the prayer of Solomon be, as it has all the appearance of being, a genuine document of the time, preserved in the archives to which the authors of both Kings and Chronicles had access, all theories of the late origin of Deuteronomy must be regarded as baseless. While references are not infrequent to other portions of the Pentateuch, the language of the prayer is mainly modelled upon Deuteronomy, the promises and threats contained in which are continually before the mind of the writer. (See the margin reference).