So Jacob took a stone, and set it up as a pillar: stone and pillar translate the same Hebrew words as used in 28.18. See there for the setting up of a stone pillar at Bethel.
Quoted with permission from Reyburn, William D. and Fry, Euan McG. A Handbook on Genesis. (UBS Helps for Translators). New York: UBS, 1997. For this and other handbooks for translators see here .