John Gill Commentary Genesis 31:13

"I am the God of Beth-el, where thou anointedst a pillar, where thou vowedst a vow unto me: now arise, get thee out from this land, and return unto the land of thy nativity." — Genesis 31:13 (ASV)

I [am] the God of Bethel The same Angel that appeared to Jacob in a dream, at the beginning of his six years' servitude, now appeared to him at the close of it, declaring himself to be the God of Bethel; or that God that manifested himself to him at Bethel, as Onkelos and Jonathan paraphrase the words; for this is a distinct vision from that in the preceding verses, concerning the rams of different colours, and are both put together for the sake of brevity, and because they belong to the same affair.

where you anointed the pillar, [and] where you vowed a vow unto me: (See Gill on Genesis 28:19), (See Gill on 28:20); hereby signifying the divine approbation of the name Jacob gave to that place, and of what he did in it, and to put him in mind of his promise there made.

now arise, get you out from this land of Mesopotamia, or Syria, and out of Haran, a city there, where Jacob now was, and Laban lived.

and return unto the land of your kindred: to the land of Canaan, the place of his nativity, and where his relations dwelt.

this shows, that this appearance of God to him, as the God of Bethel, was at the close of his six years' service.