God told Moses his personal name, so that, all those calling upon his (name) might get saved. Romans 10:13. So God expects us to call him by His Name.
Jesus's main purpose in coming to Earth, was to sanctify his fathers (Name) Matt 6:9 (above) and, to give his life as a ransom sacrifice,Matt 20:28. 1 Ti 2:5-7. so all those exercising faith in him could gain everlasting life. Romans 6:23. Acts 5:42. (below)
The scriptures show that Jehovah is the name of the (true God) Jesus's father. (John 17:26)
Now while it says, you must not take the Lords name in vain, Exodus 20:7(or in a worthless way) you must also pray to Jehovah and ask him to, Let His (Jehovah's) Name be Sanctified. Matt 6:9 next the kingdom, and then for everything (worthwhile),asking in Jesus name. John 14:14
Jesus also has the name Michael. Its Very important to know this, if you don't know the name of God, and the name of (Michael), Dan 12:1 (Jesus's name) No one can come to the father, except through the Son.