'Appear Before Me' in the Bible

Observe the Festival of Unleavened Bread. As I commanded you, you are to eat unleavened bread for seven days at the appointed time in the month of Abib, because you came out of Egypt in that month. No one is to appear before Me empty-handed.

You must redeem the firstborn of a donkey with a sheep, but if you do not redeem it, break its neck. You must redeem all the firstborn of your sons. No one is to appear before Me empty-handed.

David replied, “Good, I will make a covenant with you. However, there’s one thing I require of you: Do not appear before me unless you bring Saul’s daughter Michal here when you come to see me.”

When you come to appear before Me,who requires this from you—this trampling of My courts?