The origin of the name Malachi is Hebrew


This is how Malachi is written in Hebrew:

מַלְאָכִי = Mal`akiy


The  biblical meaning of the name Malachi is My messenger


Malachi was the prophet who wrote the last book of the Old Testament


The name Malachi appears in the bible in the following verse:

Malachi 1:1 KJV
The burden of the word of the LORD to Israel by Malachi.