[Pyro7480]

That doesn't answer my question.

[armydoc]

That doesn't answer my question.

a·lone
adj. Being apart from others; solitary. Being without anyone or anything else; only. Considered separately from all others of the same class. Being without equal; unique.
adv. Without others: sang alone while the choir listened. Without help: carried the suitcases alone. Exclusively; only: The burden of proof rests on the prosecution alone.

In the present example, the possibilities are that Mary's name is sufficient without the help of Christ or that her name exclusively performs that function; no other name is capable. Do you have another interpretation?