This is an idiom that is used to introduce something that God told his prophets or his people. See how you translated this in [Ezekiel 3:16](../03/16.md). AT: "Yahweh spoke this message" or "Yahweh spoke these words" (See: [[rc://en/ta/man/translate/figs-idiom]])
"Son of a human being" or "Son of humanity." God calls Ezekiel this to emphasize that Ezekiel is only a human being. God is eternal and powerful, but humans are not. See how you translated this in [Ezekiel 2:1](../02/01.md). AT: "Mortal person" or "Human"
The word "sword" refers to an enemy army that attacks. Also, "land" refers to the people who live there. AT: "an army to attack the people of any land" (See: [[rc://en/ta/man/translate/figs-metonymy]])
Here "blood" represents death. The phrase "on his own head" is an idiom that means the person will be held responsible. AT: "it is their own fault if they die" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-idiom]])