וַיֹּ֣אמֶר שְׁמוּאֵ֔ל קִבְצ֥וּ אֶת־כָּל־יִשְׂרָאֵ֖ל הַמִּצְפָּ֑תָה וְאֶתְפַּלֵּ֥ל בַּעַדְכֶ֖ם אֶל־יְהוָֽה׃
And Samuel said: ‘Gather all Israel to Mizpah, and I will pray for you unto the LORD.’
Read kabbalistic (mystical) interpretation of I Samuel 7:5: and classical mystical sources.