In this song Mary debates with herself about her intention - what she believes is her call - to
anoint Jesus. This was a bold and controversial act with deep significance.
Jesus emphasised just how important this event was when he said
it would be remembered wherever the gospel was preached (see Mark
The reference to Elijah recalls a prophecy that Elijah would
return as herald of the kingdom of the Messiah (see Malachi 4:5).
And one of Elijah's distinctive callings was to anoint kings and a prophet (see
1 Kings 19:15-16). John the Baptist was understood to be at least
a partial fulfilment of this prophecy (see Matthew 11:14) but he
didn't anoint Jesus. So Mary concludes that it is up to her to
do it before it's too late.