Adam Clarke's Commentary on the Bible - Genesis 35:14
A drink-offering - נסך nesech , a libation. These were afterwards very common in all countries. At first they consisted probably of water only, afterwards wine was used; see on Leviticus 7:1 ; (note), etc. The pillar which Jacob set up was to commemorate the appearance of God to him; the drink-offering and the oil were intended to express his gratitude and devotion to his preserver. It was probably the same pillar which he had set up before, which had since been thrown down, and which... read more
John Gills Exposition of the Bible Commentary - Genesis 35:14
And Jacob set up a pillar in the place where he talked with him ,.... He had set up a pillar in this place before he went to Padanaram, Genesis 28:18 ; and some, think this pillar is here referred to, and render the words, "had set up a pillar" F25 ויצב "erexerat", Vatablus; "et statuerat", Piscator; so Aben Ezra. ; but as that was done thirty years ago, it is very likely it was demolished by the Heathens before this time, or was fallen to ruin, wherefore this must be at least a... read more