preacher(-er), proclaim, publish

Concise Bible Dictionary:

Solomon in the Ecclesiastes calls himself “the preacher,” and it is said of Noah that he was “a preacher of righteousness.” Paul was appointed a preacher (herald), and it pleased God by “the foolishness of the preaching” to save them that believe. Preaching is still used of God as the means for making known the love of God and the work of Christ.

Strong’s Dictionary of Greek Words:

Greek:
κηρύσσω
Transliteration:
kerusso
Phonic:
kay-roos’-so
Meaning:
of uncertain affinity; to herald (as a public crier), especially divine truth (the gospel)
KJV Usage:
preacher(-er), proclaim, publish