For the sources and attitudes of various Biblical writers towards sacred trees, altars and standing stones, see the judicious treatment by Elizabeth C. LaRocca-Pitts, Of Wood and Stone: The Significance of Israelite Cultic Items in the Bible and Its Interpreters (Winona Lake, Indiana: Eisenbrauns, 2001; Harvard Semitic Museum Monographs 61), pp. 161–249. For an excellent guide to the sources of the Pentateuch, see Table A.1 in Theodore Hiebert, The Yahwist’s Landscape (New York: Oxford Univ. Press, 1996).