Using G-d's names in prayer

[Director Michael]

 Are we [Gentiles / Noahides] allowed to pray in the name of G-d?

There are few conditions for proper prayer. Here are a few:

• Prayers should be said only to the one true G-d.
  

• Prayer should be said audibly. At a minimum, the person himself should be able to hear the prayer he is saying / whispering. 
  

• There are some places in which a person should not pray. For example: not in a house of idol worship, or in a bathroom, or in a place with a bad smell, or where someone is unclothed, or in the presence of a filthy substance. If a person is in such a place and needs to pray on an emergency basis, and can't relocate to another place, he should pray in thought, without verbalizing his prayer.
  

In prayer to G-d, it is permissible to use His holy names as they sound in Hebrew, EXCEPT the most holy, 4-letter Ineffable Tetragrammaton Name of G-d, which should never be pronounced as it is written. That special Name was only to be spoken by the Kohen priests when they chanted the verses of the Priestly Blessing in the Holy Temple in Jerusalem, and by the High Priest in the Temple during the service of Yom Kippur. Instead of that most holy Name, one can say the substitute name "HaShem" (which translates literally as "the Name").


However, it is better for Gentiles / Noahides just to use the translated names "G-d" or "L-rd," or the descriptive names (e.g. Merciful One, Eternal One, King of kings, etc.), These should be in the language that the person understands.