spikenard - or pure nard, a celebrated aromatic (Son 1:12).
anointed the feet of Jesus - and “poured it on His head” (Mat 26:7; Mar 14:3). The only use of this was to refresh and exhilarate - a grateful compliment in the East, amidst the closeness of a heated atmosphere, with many guests at a feast. Such was the form in which Mary’s love to Christ, at so much cost to herself, poured itself out.