I found that there is some controversy over what the source of Genesis 22 is. There is a theory that the source can be found by using mathematical formulas to find a pattern of syllables. The second of four Priestly (P) source writers composed Genesis 22 along with other chapters of Genesis . I did not completely understand the reasoning behind this but I thought it was interesting that there was a theory like this that added another possible source to the writing of Genesis 22. There is also speculation that Genesis 22 comes from the Yahwist (J) Source. This is the actual source that it wrote this chapter of Genesis . This is based on the fact that there I found more evidence supporting the J source rather than the P. The J source is mainly focused on themes of rewards and fulfillment. This is the basis on which we can say that this is the source from which Genesis 22 was derived. Lastly, it was claimed that the original version of this chapter was from the Elohist (E) source. It was not until later additions where made that it became J source.
Bibliography: Bohem,Omri, Vetus Testementum (Jan. 2002 col.52 iss.1) 2,4, 145-6 Houk, Cornelius B., Journal for Study of Old Testament (Sep. 2002 vol.27 iss.1) 75 Moltz, Howard, Journal for the Study of the Old Testament (no.96 2001) 4 Willson, Patrick J., New Interpreter 's Bible, Nashville TN, Abingdon Press