וַתָּבֹ֖אוּ אֶל־הַמָּק֣וֹם הַזֶּ֑ה וַיֵּצֵ֣א סִיחֹ֣ן מֶֽלֶךְ־חֶ֠שְׁבּוֹן וְע֨וֹג מֶֽלֶךְ־הַבָּשָׁ֧ן לִקְרָאתֵ֛נוּ לַמִּלְחָמָ֖ה וַנַּכֵּֽם׃
און אַז איר זײַט געקומען צו דעם דאָזיקן אָרט, איז אַרױסגעגאַנגען סיחון דער מלך פֿון חשבון, און עוֹג דער מלך פֿון בשָן, אַקעגן אונדז אױף מלחמה, און מיר האָבן זײ געשלאָגן.
Ibn Ezra
You have seen, as well as the subsequent verse “I led you…” [: 4] and the subsequent mention of how ‘Og came out to wage war [: 6] are to be understood in the sense of, “There are among you those who have witnessed the signs which God performed in Egypt; both they and the next generation have witnessed the wonder of eating no bread other than the manna; and the younger generation witnessed how God aided them in the defeat of the two kings”.