What does 1 Kings 13:23 mean?

As they sat at the table, Yahweh’s word came to the prophet who brought him back;

and he cried out to the man of God who came from Judah, saying, “Yahweh says, ‘Because you have been disobedient to Yahweh’s mouth, and have not kept the commandment which Yahweh your God commanded you,

but came back, and have eaten bread and drank water in the place of which he said to you, “Eat no bread, and drink no water”; your body will not come to the tomb of your fathers.’”

When he had gone, a lion met him by the way and killed him. His body was thrown on the path, and the donkey stood by it. The lion also stood by the body.

Behold, men passed by, and saw the body thrown on the path, and the lion standing by the body; and they came and told it in the city where the old prophet lived.

When the prophet who brought him back from the way heard of it, he said, “It is the man of God who was disobedient to Yahweh’s mouth. Therefore Yahweh has delivered him to the lion, which has mauled him and slain him, according to Yahweh’s word, which he spoke to him.”