Why should we? All we have is the written Greek stuff and we use the English version of the Latin version of the 1st century Greek version of Jesus' name, to wit: Jesus. Maybe that's why our prayers aren't getting answered: we're using the wrong name. LOL! the proper and correct name of the Galilean Jew in question is "a rabbit hole": i..e. trivial pursuit, fun and games for those who want to play, or knuckleheads' grounds for charging "heresy". You wanna play? Go play with the Jehovah's Witnesses who will tell you that HaShem's real name is "Jehovah" and anyone who says differently won't be in heaven or in Paradise.
You just informed me of something. Never heard of HaShem before.
However, not getting into an argument, but just pointing out something. I just looked it up.
HaShem is a title. So when you say HaShem's real name, you are not saying God's (title), or Lord's (title) real name, but you are saying, the Name's real name.
So it would seem to me, the more we avoid using a name, rather than titles we feel comfortable with, the more confusion we create.
For Jehovah's Witnesses, it not such a matter of a person not using the name Jehovah, not getting to heaven or paradise, but it is more a matter of a person having a relationship with God.
I don't know of anyone who has a close relationship with someone, not knowing their name, and using it... unless the person is nameless.
So it seems evident to me, that those who are close to God, will use his name... even if it is not accurate. There are a lot of things we don't know accurately, but God expects us to at least be in line with what is outlined in his word, by the prophets, Jesus, and the apostles... it's all written, thousands of places in the Bible.
I can't quote all...
(Psalm 5:11) . . .those loving your name will rejoice in you. . .
(Psalm 8:1) . . .how majestic your name is throughout the earth. . .
(Psalm 9:10) . . .Those knowing your name will trust in you. . .
(Psalm 34:3) . . .Let us exalt his name together. . .
(Psalm 68:4) . . .Jah is his name! Rejoice before him!
(Psalm 72:19) . . .May his glorious name be praised forever. . .
(Psalm 79:6) . . .Pour out your wrath on the nations that do not know you And on the kingdoms that do not call on your name.
(Psalm 83:18) . . .May people know that you, whose name is _________ (Fill in the blank. It's not a title), You alone are the Most High over all the earth.
(John 17:6) . . .I have made your name manifest to the men whom you gave me . . .
(John 17:26) . . .I have made your name known to them and will make it known. . .
(Acts 15:14) . . .Symʹe·on has related thoroughly how God for the first time turned his attention to the nations to take out of them a people for his name.
(Acts 15:17) . . .so that the men who remain may earnestly seek Jehovah, together with people of all the nations, people who are called by my name, says Jehovah, who is doing these things,