'Matter' in the Bible

For David did what was right in the Lord’s eyes, and he did not turn aside from anything He had commanded him all the days of his life, except in the matter of Uriah the Hittite.

Then, as if following the sin of Jeroboam son of Nebat were a trivial matter, he married Jezebel, the daughter of Ethbaal king of the Sidonians, and then proceeded to serve Baal and worship him.