Martian from SA gets it backwards but he's good according to Luke (9)
I believe the answer is:
samaritan
'it backwards but he's good according to luke' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'martian from sa' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'martian' is 'maritan' which is located in the answer.
'sa' is within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'gets' is the link.
Can you help me to learn more?
(Other definitions for samaritan that I've seen before include "Good man of the Bible" , "(Good) helpful person" , "Charitable person" , "Kindly person who helps another in distress" , "good-hearted man" .)