וַיִּסְעוּ֙ מֵהַ֣ר יְהוָ֔ה דֶּ֖רֶךְ שְׁלֹ֣שֶׁת יָמִ֑ים וַאֲר֨וֹן בְּרִית־יְהוָ֜ה נֹסֵ֣עַ לִפְנֵיהֶ֗ם דֶּ֚רֶךְ שְׁלֹ֣שֶׁת יָמִ֔ים לָת֥וּר לָהֶ֖ם מְנוּחָֽה׃
И отправились с горы Господней на три дня'поездка; и ковчег завета Господня пред ними три дня'путешествие, чтобы найти место отдыха для них.
Rashi
דרך שלשת ימים [AND THEY DEPARTED FROM THE MOUNT OF THE LORD] THREE DAYS’ JOURNEY — A distance of three days’ journey they miraculously travelled in one day, because the Holy One, blessed be He, desired to bring them straight away into the Land (cf. Sifrei Bamidbar 82).
Ramban
AND THEY SET FORWARD FROM THE MOUNT OF THE ETERNAL THREE DAYS’ JOURNEY. According to the plain meaning of Scripture, the cloud [of the Eternal] journeyed and went before them for three days and the ark followed the cloud in front of the people, and it did not come to rest in that place until the night of the third day, when the cloud rested in the wilderness of Paran,140See Ramban further, 12:16 for explanation of this area. which was a good place for them to camp in. This is the sense of [the expression] to seek out a resting-place for them.141Verse 33. And when the cloud rested they erected the Tabernacle and brought the ark into it. Scripture, however, did not explain whether they also journeyed at night.
Rashbam
'מהר ה, for the people at that time had still not moved from Mount Chorev in the desert of Sinai. This was after the Tabernacle had been erected, as I have explained in connection with Numbers 1,1 on the words מדבר סיני.