Verse 16: And it came to pass at the seventh time, when the priests blew with the trumpets, Joshua said unto the people, Shout; for the LORD hath given you the city.
[And when…they sounded] That is, when they prepared to blow their horns (Masius). This is only the preparation for sounding; the execution and event is in verse 20. For the following instruction could hardly be given and received with the horns sounding (Malvenda). This blast was ordinary, not singular (Masius). [Others otherwise:] The blast was unusual, otherwise it could not be a sign to shout (Bonfrerius).
[And he said to all Israel] Question: How was this possible? Responses: 1. He said it to those near, and these to others, etc. (Lapide, Bonfrerius). 2. He proclaimed it through heralds; or, through the princes and heads of the families (Lapide); or through certain men stationed at certain places (Bonfrerius).
Shout, to testify your faith in God’s promise, and thankfulness for this glorious mercy, and to encourage yourselves and brethren, and to strike a terror into your enemies.
[He has delivered to you] It appears that this was now promulgated for the first time, and that he had led the people in their circuit in hope, but an uncertain one; whereby the obedience of the people shines all the more, who were so eagerly compliant to him (Masius).
 Hebrew: וַיְהִי֙ בַּפַּ֣עַם הַשְּׁבִיעִ֔ית תָּקְע֥וּ הַכֹּהֲנִ֖ים בַּשּׁוֹפָר֑וֹת וַיֹּ֙אמֶר יְהוֹשֻׁ֤עַ אֶל־הָעָם֙ הָרִ֔יעוּ כִּֽי־נָתַ֧ן יְהוָ֛ה לָכֶ֖ם אֶת־הָעִֽיר׃