In chapter 13 of the book of Judges we read about Manoah from the tribe of Dan whose wife was barren. One day, Manoah asked the Angel of the LORD who had appeared to him and his wife to assure them that they will have a child (Samson),
"What is your name?"
The Angel told Manoah that his name was "incomprehensible" (verse 18, WEB).
The KJV renders "incomprehensible" as "wonderful", while the GNB says, "It is a name of wonder".
17 Manoah said to the LORD’s angel, “What is your name, that when your words happen, we may honour you?”
18 The LORD’s angel said to him, “Why do you ask about my name, since it is incomprehensible*?”
Judges 13:17 - 18 World English Bible (British Edition)
If the name of the Angel of the LORD is too wonderful to be mentioned and too diificult for us to comprehend, how much more wonderful and incomprehensible is the Name of the LORD Himself. This could be the reason why nobody knows with certainty the exact pronunciation of the Name of God written in the Tetragrammaton consonants "yod-hey-vav-hey" or YHWH.
Until today, the people of Israel will say "Adonai" (LORD) or "HaShem" (the Name) whenever they come across the Tetragrammaton in the TaNaKh (Torah, Neviim, Khetuvim: Law, Prophets, Writings).
In the New Testament, our Lord Iesus the Anointed One taught His disciples to call God, "the Father".
Brothers and Sisters in the Anointed One. The name of the Angel who appeared to Samson's parents was incomprehensible. It was too wonderful to be mentioned. Likewise, the Name of our God is a Name of Wonder, too wonderful for us to say, and too profound for us to comprehend.
Like our Lord Iesus, let us call God our Father in Heaven.