'Announcer' in the Bible

You yourselves are my witnesses that I stated, ‘I am not the Christ (the Messiah, the Anointed),’ but, ‘I have [only] been sent ahead of Him [as His appointed forerunner and messenger to announce and proclaim His coming].’

And certain of the Epicurean and of the Stoic philosophers, were meeting together to see him, and some were saying, 'What would this seed picker wish to say?' and others, 'Of strange demons he doth seem to be an announcer;' because Jesus and the rising again he did proclaim to them as good news,

For this reason I was appointed to be an announcer, an apostle, and a faithful and true teacher of the gentiles. (I am telling you the truth. I am not lying.)