II Samuel 15:28 Midrash

רְאוּ֙ אָנֹכִ֣י מִתְמַהְמֵ֔הַּ בעברות [בְּעַֽרְב֖וֹת] הַמִּדְבָּ֑ר עַ֣ד בּ֥וֹא דָבָ֛ר מֵעִמָּכֶ֖ם לְהַגִּ֥יד לִֽי׃

See, I will tarry in the plains of the wilderness, until there come word from you to announce unto me.’

Read midrashic interpretation of II Samuel 15:28: and classical rabbinic exegesis.