Proverbs 15:7
The lips of the wise disperse knowledge, but the heart of the foolish, not so.
Matthew 12:34
Ye offspring of vipers, how can ye, being evil, speak good things? For out of the abundance of the heart the mouth speaks.
Psalm 37:30
The mouth of a righteous man talks of wisdom, and his tongue speaks justice.
Psalm 45:2
Thou are fairer than the sons of men. Grace is poured into thy lips. Therefore God has blessed thee forever.
Psalm 51:13-15
Then I will teach transgressors thy ways, and sinners shall be converted to thee.
Psalm 71:15-18
My mouth shall tell of thy righteousness, of thy salvation all the day, for I know not the numbers.
Psalm 78:2-6
I will open my mouth in parable{s (LXX/NT)}. I will utter dark sayings of old,
Psalm 119:13
With my lips I have declared all the ordinances of thy mouth.
Proverbs 10:20-21
The tongue of a righteous man is choice silver. The heart of the wicked is little worth.
Ecclesiastes 12:9-10
And further, because the Preacher was wise, he still taught the people knowledge. Yea, he pondered, and sought out, [and] set in order many proverbs.
Matthew 10:27
What I tell you in the darkness, speak ye in the light, and what ye hear in the ear, proclaim upon the housetops.
Matthew 28:18-20
And Jesus having come, he spoke to them, saying, All authority in heaven and on earth was given to me.
Mark 16:15
And he said to them, Having gone into all the world, preach ye the good-news to the whole creation.
Acts 18:9-10
And the Lord spoke to Paul by a vision at night, Fear not, but speak, and be not silent,
Romans 10:14-17
How then will they call on whom they have not believed? And how will they believe of whom they have not heard? And how will they hear without preaching?
Romans 15:18-21
For I will not dare to speak anything of which Christ did not accomplish through me for the obedience of Gentiles, by word and work,
Ephesians 4:29
Let no corrupt speech go out of your mouth, rather if there is any good word for edification of a need, so that it may give grace to those who hear.
2 Timothy 2:2
And what thou have heard from me through many witnesses, these things commit thou to faithful men who will be competent to teach others also.
James 3:6
And the tongue is a fire, the world of unrighteousness. Thus, the tongue is made to lead among our body-parts, defiling the whole body, and setting the cycle of nature on fire, and being set on fire by hell.