'Appear Before Me' in the Bible

You will keep the Feast of Unleavened Bread; for seven days you will eat unleavened bread, as I commanded you at [the] appointed time, the month of Abib, because in it you came out from Egypt, and {no one will} appear before me empty-handed.

But the first offspring of a donkey you will redeem with small livestock, and if you will not redeem [it], you will break its neck. Every firstborn of your sons you will redeem, and you will not appear before me empty-handed.

When you come to appear before me, who asked for this from your hand: you trampling my courts?