'Knowledge' in the Bible

Paul, a slave of God and an apostle of Jesus Christ, to build up the faith of God’s elect and their knowledge of the truth that leads to godliness,

Giving no attention to the fictions of the Jews and the rules of men who have no true knowledge.

They say that they have knowledge of God, while by their acts they are turning their backs on him; they are hated by all, hard-hearted, and judged to be without value for any good work.

Training us so that, turning away from evil and the desires of this world, we may be living wisely and uprightly in the knowledge of God in this present life;