2783 kerux {kay'-roox}
from 2784; TDNT - 3:683,430; n m
AV - preacher 3; 3
1) a herald or messenger vested with public authority, who conveyed
the official messages of kings, magistrates, princes, military
commanders, or who gave a public summons or demand, and performed
various other duties. In the NT God's ambassador, and the herald
or proclaimer of the divine word.