You're taking scripture out of context in your last part of your post. Whose name did the Early Church witness to people in? Jesus or God's?
Where in the Bible does God command us to use His name or else we're not saved?
YWH is the correct form. Jehovah is an error as I showed in my last post to you as admitted by the WTBS
In the last book of the Bible, its writer the apostle John says concerning himself as a Christian: “John, who bare witness of the word of God, and of the testimony of Jesus Christ.” (Rev. 1:1, 2, American Standard Version)
A true Christian has to bear witness of both God and of his Christ or Messiah.
Let no one forget or hide the fact that the title Christ or Messiah means “Anointed One.” For there to be an anointed one there has to be an anointer or anointing one. So, in order to bear full witness concerning Jesus Christ, we also have to bear witness to the One who anointed Jesus and made him the Christ or Messiah.
We have to bear witness to the Anointer as well as the Anointed One. Well, then who anointed Jesus, and with what—oil, or what?
Jesus himself tells us who anointed him.
When, in the Jewish synagogue, the book of Isaiah was handed to him, he turned to chapter sixty-one, verses one and two, and read them in the Hebrew, as follows:
“The Spirit of the Lord Jehovah is upon me; because Jehovah hath anointed me to preach good tidings unto the meek; he hath sent me to proclaim the year of Jehovah’s favor.” (Isa. 61:1, 2, AS)
After reading those words in the Hebrew text, in which the Hebrew name of God occurs (יהוה
, he opened up his sermon to the Jews, saying: “To-day hath this scripture been fulfilled in your ears.” (Luke 4:16-21, AS)
Thus Jesus publicly said that the Lord Jehovah had anointed him with holy spirit.
Jesus on earth did not anoint himself with holy spirit from heaven.
Three and a half years later he baptised his disciples with holy spirit from heaven, but Jesus did not baptise himself with spirit.
The Lord Jehovah did that; and Jesus said that the Lord Jehovah was the One who sent him to preach and to “proclaim the year of Jehovah’s favor.”
So Jesus and Jehovah are not the same individual. Jehovah is the Sender; Jesus is the Sent One. Jehovah is the Anointer; Jesus is the Anointed One or Messiah.
(Matthew 24:13) But the one who has endured to the end will be saved.
Not once saved, always saved, is not true.
Also further confirmation
(1 John 4:8-10) .Whoever does not love has not come to know God, because God is love. 9 By this the love of God was revealed in our case, that God sent his only-begotten Son into the world so that we might gain life through him. 10 The love is in this respect, not that we have loved God, but that he loved us and sent his Son as a propitiatory sacrifice for our sins.
Who sent his Son?
(1 John 4:11, 12) 11 Beloved ones, if this is how God loved us, then we are also under obligation to love one another. 12
No one has seen God at any time.
Jesus cannot be God if No one has seen God at any time. Yes?
also
There was every reason why the apostle John, in the last book of the Bible, should call Jesus Christ “the faithful witness, the firstborn of the dead, and the ruler of the kings of the earth. and he made us to be a kingdom,
to be priests unto his God and Father.” (Rev. 1:5, 6, AS) And the apostle John quoted Jesus as saying to him: “These things saith the Amen, the faithful and true witness, the beginning of the creation of God.”—Rev. 3:14, AS; AV.
Of whom was Jesus Christ “the faithful and true witness”?
By his birth into the nation to whom the words of Isaiah 43:10-12 were directed, Jesus Christ was obliged to be a witness of Jehovah. He lived up to this obligation, for all the written record as to what he said and as to all the Hebrew scriptures that he quoted proves that he was Jehovah’s witness.
If the question were today directed to Jesus Christ, Of which God are you a witness? he would reply: Of Jehovah!
He was and still is in heaven the “faithful and true witness” of “his God and Father.”—Rev. 1:5, 6, AS.