God's name is beyond understanding

Judges 13:15-25
Why do you ask my name? It is beyond understanding.
The angel of the Lord replied, “Even though you detain me, I will not eat any of your food. But if you prepare a burnt offering, offer it to the Lord.”
Manoah's wife was more clear mind and understood the meaning of the Lord, so she did not afraid or worry too much.
The woman gave birth to a boy and named him Samson. He grew and the Lord blessed him.
Why?
God's name is the Almighty God, his name is I am who I am, it is beyond understanding  to man.
Angel of the Lord is angel so he can not take the honor of the Lord, his mission is to deliver the message of the Lord to people.
How?
God's name is beyond understanding.