This is another saying that stood in both Mark and Q. Mark has the saying in Mk iv, 21. His form of it is the apparently less natural one, "Does the lamp come in order that it may be put under a bushel?" etc. Weiss suggests[95] that it has been given this form to make it refer to the coming of Jesus as the light of the world. Neither Matthew nor Luke has copied this feature of Mark's saying. By his context Matthew makes the saying refer, like the saying about salt, directly to the disciples. Luke has the saying twice: in xi, 33 and viii, 16. In both cases his context would indicate that he took the saying to refer to the teaching of Jesus. Matthew says the light is to give light "to all that are in the house." Luke does not mention the house, but implies it in his statement that "those who are entering in see the light," this form being found in both his reports of the saying. Mark says "under the bushel or under the bed"; Matthew, "under the bushel"; Luke once, "in a dish or under the bed," and a second time, "in a cellar or under the bushel." Luke's fondness for the same ending in his two uses of the saying can be explained only by the supposition that it so stood in one of his sources. The same idea in the conclusion of the saying as it appears in Matthew and Luke, and their common avoidance of the opening formula which is peculiar to Mark, would indicate that Matthew and Luke practically forsake Mark in this saying, and follow their other source. Luke, having a doublet for the saying, may be assumed to have taken it once from Mark and once from his other source; but he is evidently much more influenced by his other source than he is by Mark. The non-Marcan source in which the saying was found by Matthew and Luke was evidently an allied, but not an identical, one; the saying is therefore assigned to QMt and QLk.
There are twenty-seven words in Matthew's form of this saying; fifteen in Luke's. Only nine words show any correspondence. Matthew's "until all be fulfilled" is held by Schmiedel[96] to be a gloss, added, not by the final editor of Matthew, who did not care for Jewish legalism, but by an earlier editor. Harnack maintains that it goes back to Jesus, and does not necessarily mean that the law shall ultimately pass away. In his essay in the _Oxford Studies_ Hawkins maintains that the section can be made "very probable" for Q. Considering the wide divergences, the writer would add that this probability can be established only upon the hypothesis of two recensions of Q; upon that hypothesis it would be granted by everyone.