John 12:3

Then took Mary a pound of ointment of spikenard very costly ,.... Worth three hundred pence, according to Judas's estimation of it. This Mary was the other sister of Lazarus; See Gill on Matthew 26:7 , See Gill on Mark 14:3 , concerning the nature and value of this ointment:

and anointed the feet of Jesus ; as he lay upon the bed or couch, at supper:

and wiped his feet with her hair ; See Gill on Luke 7:38 .

And the house was filled with the odour of the ointment ; see Song of Solomon 1:3 ; ointment of spikenard was very odoriferous: this may be an emblem of the sweet savour of Christ, in the ministration of the Gospel, throughout the whole world.