וַיִּקְשְׁר֤וּ כֻלָּם֙ יַחְדָּ֔ו לָב֖וֹא לְהִלָּחֵ֣ם בִּירוּשָׁלִָ֑ם וְלַעֲשׂ֥וֹת ל֖וֹ תּוֹעָֽה׃
and they conspired all of them together to come and fight against Jerusalem, and to cause confusion therein.
Read midrashic interpretation of Nehemiah 4:2: and classical rabbinic exegesis.