Don't go overboard to impress people and above all to show off. Nothing makes as bad an impression as someone who falls into their own trap.
Human beings are born with two eyes and one tongue.
It is so that they see twice what they are going to say.
Sin is not lacking in the many words;
but he who restrains his lips is prudent.
This you know, my beloved brothers. But let each one be quick to hear, slow to speak, slow to anger;
James 3: 2
Because we all stumble in so many ways. If someone does not stumble in what he says, he is a perfect man, also capable of restraining the whole body.
Job 11: 2
Will that multitude of words remain unanswered, and will he who speaks much be acquitted?
He who holds back his words has knowledge, and he who is calm in spirit is a man of understanding.
Death and life are in the power of the tongue, and those who love it will eat its fruit.
Ecclesiastes 5: 2
Do not be in a hurry to speak, and do not rush your heart to speak a word before God. Because God is in heaven and you are on earth; therefore your words are few.
Ecclesiastes 5: 3
Because dreams come from many tasks, and the voice of a fool from many words.