In Luke 7, the anointing is an expression of repentance, love, and gratitude.
In John 12, the anointing is an expression of devotion and preparation for Jesus's burial.
Different motivations do not require different women.
The question is not whether the motivations were identical. The question is why the same highly distinctive gesture appears in both accounts.
You are minimizing Luke 7 while emphasizing John 12.
Luke 7 does not merely describe a woman "rubbing oil" on Jesus's feet.
The woman:
- wet His feet with her tears
- wiped them with her hair
- kissed His feet
- anointed them
John 12 likewise describes Mary:
- anointing Jesus's feet
- wiping His feet with her hair
The Greek argument does not resolve the issue.
Both passages use forms of
ἀλείφω (aleipho). More importantly, my argument does not rest on the application of oil alone.
The distinctive feature is not merely the application of oil. It is the highly unusual combination of
anointing Jesus's feet and wiping them with her hair.
That is precisely the connection John invokes in John 11:2 when he identifies Mary as:
"the one who anointed the Lord and wiped His feet with her hair."
If John intended readers to think only of the Bethany anointing in John 12, then he has the unusual problem of identifying Mary by an event he has not yet narrated.
That is the issue that still needs to be explained.