Jamieson, Fausset and Brown on Mark 14:4

4. And there were some that had indignation within themselves and said--Matthew says (Mt 26:8), "But when His disciples saw it, they had indignation, saying," &c. The spokesman, however, was none of the true-hearted Eleven--as we learn from John (Joh 12:4): "Then saith one of His disciples, Judas Iscariot, Simon's son, which should betray Him." Doubtless the thought stirred first in his breast, and issued from his base lips; and some of the rest, ignorant of his true character and feelings, and carried away by his plausible speech, might for the moment feel some chagrin at the apparent waste.

Why was this waste of the ointment made?