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.
What does Malachi mean?
From the Hebrew Malʾakhi, “my messenger.” Malachi is the last of the Hebrew prophets.