Hi waton, thanks for the explanation.
However, it is difficult for me to follow the thought. I am not sure if the sanctity of a name lessens by the mere frequency of its usage when it itself appears more than 6,800 times in the Hebrew text. In the Psalms alone it appears about 700 times. In fact, in the Hallel, which is sung by Jews, it appears 60 times.
The Hallel even contains a verse, "Blessed is the one who comes in the name of Jehovah", which people sang when welcoming Jesus in Jerusalem. In fact, many verses in Psalms show the importance of knowing the name, trusting the name, and taking refuge in the name.
The crown jewels are the private property of the queen which remains at her disposal, and she decided how to use it and we respect. The creator himself included the name about 6,800 times in the scriptures and has asked people to read it daily. Why would he do so, if he wanted no one to use it?
All of this makes me skeptical of the opinion that Jesus never used the divine name.
How he addressed the creator in his prayers differs from prayer to prayer. Sometimes, he used Abba, sometimes as Father, during his death he said My God. I don't feel this establishes any pattern for us, just shows his personal endearment with his creator. He never addressed Mary as 'Mother', rather he addressed her as 'Woman', and we don't establish any pattern from it either.