Kommentar zu Bereschit 35:1

קום עלה ARISE: GO UP [TO BETHEL] — Because you have delayed to fulfil your vow to sacrifice to me at Bethel you have been punished by this trouble of your daughter coming upon you (Genesis Rabbah 81:2).

GO UP TO BETH-EL AND ABIDE THERE, AND MAKE THERE AN ALTAR. I do not know the significance of the expression, and abide there. Now it is possible that G-d commanded him to abide there at first in order to purify the camp from the idols taken from Shechem or from the dead they had touched, similar to, And encamp ye without the camp seven days,¹⁷⁶Numbers 31:19. Said to the soldiers who returned from the war against the Midianites. since they had not yet been commanded concerning the Waters of Sprinkling,¹⁷⁷Ibid., 19:17-19. Used in purification from the defilement of touching a dead body. and afterwards they were to make the altar. But Jacob was zealous in observing the commandment to be purified before he came to Beth-el. It may be that Jacob’s words, And let us arise, and go up to Beth-el,¹⁷⁸Verse 3 here. actually preceded the purification mentioned in the previous verse. And perhaps the command, and abide there, means that he was to direct his thought to cleaving to G-d.¹⁷⁹See Ramban, Deuteronomy 11, for further elucidation of this matter.

ושב שם. An invitation to prepare himself mentally and spiritually before beginning to build the altar that he had in mind to erect. This corresponds to what our sages have described as being the manner in which they prepared for prayer and subsequently unwound before pursuing mundane activities. According to Berachot 30 they spent an hour “gearing up” before commencing their prayers and then spent an hour unwinding before going about the business of earning their daily bread.