וַיֹּ֣אמֶר ׀ לֹ֗א כִּ֛י אֲנִ֥י שַׂר־צְבָֽא־יְהוָ֖ה עַתָּ֣ה בָ֑אתִי וַיִּפֹּל֩ יְהוֹשֻׁ֨עַ אֶל־פָּנָ֥יו אַ֙רְצָה֙ וַיִּשְׁתָּ֔חוּ וַיֹּ֣אמֶר ל֔וֹ מָ֥ה אֲדֹנִ֖י מְדַבֵּ֥ר אֶל־עַבְדּֽוֹ׃
האָט ער געענטפֿערט: נײן, נײַערט איך בין דער חיל-פֿירער פֿון גאָט; אָקאָרשט בין איך געקומען. איז יהוֹשועַ געפֿאַלן אױף זײַן פּנים צו דער ערד, און האָט זיך געבוקט, און האָט צו אים געזאָגט: װאָס װיל מײַן האַר רעדן צו זײַן קנעכט?
Rashi
I have now come.—“to help you, for it is impossible for man to battle against it [Yericho] and capture it, to knock down the wall. However in the days of your master, Moshe, I came, but he did not want my presence, as it is said, ‘If your Presence [Adonoy] does not go, etc.’”15Shemos 33:15.
Metzudat David
He replied "No": meaning, I have not come to help the enemies of Israel, because I am a Minister of Israel that are called Army of the Lord, and that you have not seen me until now is because now I have come, and not earlier:
Metzudat David
What does my lord speak: meaning "speak your word and I am here to fulfil it as a servant who fulfils the word of the master."