Reference for II Kings 3:6

וַיֵּצֵ֞א הַמֶּ֧לֶךְ יְהוֹרָ֛ם בַּיּ֥וֹם הַה֖וּא מִשֹּׁמְר֑וֹן וַיִּפְקֹ֖ד אֶת־כָּל־יִשְׂרָאֵֽל׃

And king Jehoram went out of Samaria at that time, and mustered all Israel.

BDB