Luke 18:19

And Jesus said unto him
In answer to his question, beginning with the character he gave him:

why callest thou me good?
it being unusual to address men, even their Rabbins, under such a title:

none is good, save one, [that is], God:
or "but God alone"; as the Vulgate Latin and Arabic versions render it; or, "but the one God", as read the Syriac, Persic, and Ethiopic versions; (See Gill on Matthew 19:17).