This is just my View on the issue and backed by Scripture as well, but I may be wrong.
YHWH or Jehovah in the True aspect is the Trinity of the Father to Son and the Holy Spirit. In order to have a relationship with God you must accept His Son Jesus.
Now you can recognize God, Allah, Gott, Lord, Jehovah(YHWH) and Pray to Him and your Prayers be heard even thou you have not yet accepted Jesus as your Savior.
Refence.
Quote:
Act 10:1In Caesarea there lived a Roman army officer named Cornelius, who was a captain of the Italian Regiment. 2He was a devout man who feared the God of Israel, as did his entire household. He gave generously to charity and was a man who regularly prayed to God. 3One afternoon about three o'clock, he had a vision in which he saw an angel of God coming toward him. "Cornelius!" the angel said.
4Cornelius stared at him in terror. "What is it, sir?" he asked the angel. And the angel replied, " "Your prayers and gifts to the poor have not gone unnoticed by God! ! 5Now send some men down to Joppa to find a man named Simon Peter. 6He is staying with Simon, a leatherworker who lives near the shore. Ask him to come and visit you."
30Cornelius replied, "Four days ago I was praying in my house at three o'clock in the afternoon. Suddenly, a man in dazzling clothes was standing in front of me. 31He told me, ` Cornelius, your prayers have been heard, and your gifts to the poor have been noticed by God! 32Now send some men to Joppa and summon Simon Peter. He is staying in the home of Simon, a leatherworker who lives near the shore.' 33So I sent for you at once, and it was good of you to come. Now here we are, waiting before God to hear the message the Lord has given you."
Quote:
The Gentiles Receive the Holy Spirit
44Even as Peter was saying these things, the Holy Spirit fell upon all who had heard the message. 45The Jewish believers who came with Peter were amazed that the gift of the Holy Spirit had been poured out upon the Gentiles, too. 46And there could be no doubt about it, for they heard them speaking in tongues and praising God.
Now Cornelius had not accepted Christ into His Heart yet but recognized that the God of Abraham was God and prayed to Him, Just as Muslims, Jews and others have.
So you see here is a Man who had not recieved Christ into His heart but prayed to the God of Abraham and God heard His prayers. So according to Scripture God can here the prayers of those who have not yet accepted Christ who are praying to Him as YHWH only.
But with that being said no man can come to the Father but thru the Son, You can recodnize the Father all you want but without the Son it is all for not. You can not enter into a blessed Eternity with out knowing the Son Jesus christ as your Savior.
I think it is like this Say God is in a gated community. People can shout and pray to God thru the gate and according to Scripture God can hear them. But inorder to get inside the gated community the Son is at the gate and grants passage to the Father, so althou they can shout and pray to the father they can not get to him without going thru the Son at the Gate.
People can pray and worship God the father with out recognizing the Son Jesus Christ as the book of Acts shows us. But you can not enter into a relationship with God without going thru His Son Jesus Christ so all of the shouting and praying will get you nowhere unless you accept the Son than you will be wit the Father.