Treasury of Scripture Knowledge
The tongue of the wise uttereth knowledge aright; But the mouth of fools poureth out folly.
The heart of the wise instructeth his mouth, And addeth learning to his lips.
1 Kings 3:23
Then said the king, The one saith, This is my son that liveth, and thy son is the dead: and the other saith, Nay; but thy son is the dead, and my son is the living.
Be not rash with thy mouth, and let not thy heart be hasty to utter anything before God; for God is in heaven, and thou upon earth: therefore let thy words be few.
1 Peter 3:15
but sanctify in your hearts Christ as Lord: being ready always to give answer to every man that asketh you a reason concerning the hope that is in you, yet with meekness and fear: