וּבַיּ֣וֹם הָרְבִעִ֗י נִקְהֲלוּ֙ לְעֵ֣מֶק בְּרָכָ֔ה כִּי־שָׁ֖ם בֵּרֲכ֣וּ אֶת־יְהוָ֑ה עַל־כֵּ֡ן קָֽרְא֞וּ אֶת־שֵׁ֨ם הַמָּק֥וֹם הַה֛וּא עֵ֥מֶק בְּרָכָ֖ה עַד־הַיּֽוֹם׃
And on the fourth day they assembled themselves in the valley of Beracah; for there they blessed the LORD; therefore the name of that place was called The valley of Beracah, unto this day.
Read halakhic rulings (Jewish law) on II Chronicles 20:26: and classical halakhic sources.