'Knowledgeable' in the Bible

Whoever controls what he says is knowledgeable; anyone who has a calm spirit is a man of understanding.

There is gold and a multitude of jewels,but knowledgeable lips are a rare treasure.

A wise man is strong, and a knowledgeable man grows in strength.

When a land is in rebellion, it has many rulers,but with a discerning and knowledgeable person, it endures.