וְכָל־יִשְׂרָאֵ֗ל אֲשֶׁ֛ר סְבִיבֹתֵיהֶ֖ם נָ֣סוּ לְקֹלָ֑ם כִּ֣י אָֽמְר֔וּ פֶּן־תִּבְלָעֵ֖נוּ הָאָֽרֶץ׃
And all Israel that were round about them fled at the cry of them; for they said: ‘Lest the earth swallow us up.’
Read kabbalistic (mystical) interpretation of Numbers 16:34: and classical mystical sources.