לֹֽא־אוּכַ֤ל אָנֹכִי֙ לְבַדִּ֔י לָשֵׂ֖את אֶת־כָּל־הָעָ֣ם הַזֶּ֑ה כִּ֥י כָבֵ֖ד מִמֶּֽנִּי׃
I am not able to bear all this people myself alone, because it is too heavy for me.
Read kabbalistic (mystical) interpretation of Numbers 11:14: and classical mystical sources.