וְיֵ֞שׁ אֲשֶׁ֨ר יִהְיֶ֧ה הֶֽעָנָ֛ן יָמִ֥ים מִסְפָּ֖ר עַל־הַמִּשְׁכָּ֑ן עַל־פִּ֤י יְהוָה֙ יַחֲנ֔וּ וְעַל־פִּ֥י יְהוָ֖ה יִסָּֽעוּ׃
Parfois la nuée ne restait qu’un certain nombre de jours sur le tabernacle: ils avaient campé à la voix de l’Éternel, à la voix de l’Éternel ils partaient.
Shenei Luchot HaBerit
על פי ה' יסעו, ועל פי ה' יחנו . Immediately after this, we read that the Israelites made camp at the instruction of G–d and that they broke camp at the command of G–d. The reason that the Torah repeats these reports of how the children of Israelites behaved is to teach us that we should not make a move in life without prefacing it with a remark that indicates that we hope that what we are about to do meets with G–d's approval. Whenever we arrive at our destination or complete an undertaking we are to mention that we hope that what we accomplished meets with G–d's approval, and to thank Him for having enabled us to carry out what we set out to do. By doing this our awareness of G–d will be constant, both when we set out to do something, while we are involved in it, and when we have completed it.