What does Malachi mean?
From the Hebrew Malʾakhi, “my messenger.” Malachi is the last of the Hebrew prophets.
What does Micah mean?
A shortened form of Micaiah (Mikayahu), built as a rhetorical question: mi 'who' + ka 'like' + Yah (short for Yahweh), 'Who is like Yah(weh)?' It is not a literal statement but a theophoric name affirming God's incomparability. Distinct from Michael, which uses El rather than Yah.