'Speak' in the Bible

holding fast to the faithful message according to the teaching, in order that he may be able both to exhort with sound instruction and to reprove those who speak against [it].

But you, speak [the things] which are fitting for sound instruction.

Speak these [things] and exhort and reprove with all authority. Let no one disregard you.

to speak evil of no one, to be peaceable, gentle, showing all courtesy to all people.