Verse 9: And Moses sware on that day, saying, (Num. 14:23, 24; Deut. 1:36; Josh. 1:3) Surely the land (see Num. 13:22) whereon thy feet have trodden shall be thine inheritance, and thy children’s for ever, because thou hast wholly followed the LORD my God.
[And Moses swore] This oath is related in Deuteronomy 1:34 (Bonfrerius). But it is sufficiently contained in Numbers 14:21, etc. (Bonfrerius, Masius). But there God, here Moses, is said to have sworn: but there is little difference, since Moses, as God’s messenger, made this promise (Bonfrerius, similarly Masius). Those words, my servent Caleb, etc., hang by the continuous thread of the discourse from those words, I live, etc. (Masius). Not Canaan in general, but a certain place, is promised to Caleb, as it is evident from this passage, and from verses 12 and 13, and from Deuteronomy 1:36. Moreover, that place was none other than Hebron, of which, since the rest were more fearful, he would take possession, and by his example would go before others (Bonfrerius).
[The land, etc.] Hebrew: If not the land, etc. Sacred Scripture sets forth a curt form of swearing, as is its custom. Omitted are words of this sort, le me not live, or, let me not be true, if those things be not fulfilled. Now, it is impious to conceive such a thing in the soul concerning God, much less to utter it; and therefore they speak ἐλλειπτικῶς/elliptically, or curtly. Thus men swear; May God do so to me, and thus add, that is, may He proceed to do so more and more. May God destroy me utterly, etc., is to be understood, which, since it is taboo to say (for no one ought to entreat ill for himself), by ἀποσιώπησιν/silence those words foreboding ill are cut short (Masius).
Surely the land whereon thy feet have trodden, etc.: See Numbers 14:24; Deuteronomy 1:36.
 Hebrew: וַיִּשָּׁבַ֣ע מֹשֶׁ֗ה בַּיּ֣וֹם הַהוּא֮ לֵאמֹר֒ אִם־לֹ֗א הָאָ֙רֶץ֙ אֲשֶׁ֙ר דָּרְכָ֤ה רַגְלְךָ֙ בָּ֔הּ לְךָ֙ תִֽהְיֶ֧ה לְנַחֲלָ֛ה וּלְבָנֶ֖יךָ עַד־עוֹלָ֑ם כִּ֣י מִלֵּ֔אתָ אַחֲרֵ֖י יְהוָ֥ה אֱלֹהָֽי׃
 In Numbers 14:24.
 In Numbers 14:21.
 Hebrew: אִם־לֹ֗א הָאָ֙רֶץ֙.
 See, for example, 1 Kings 2:23: “Then king Solomon sware by the Lord, saying, God do so to me, and more also (כֹּ֣ה יַֽעֲשֶׂה־לִּ֤י אֱלֹהִים֙ וְכֹ֣ה יוֹסִ֔יף), if Adonijah have not spoken this word against his own life.” See also 2 Kings 6:31.