I have begun with the nature of God, specifically, ‘WHO is God?’, because someone I know made the statement that Jesus was Yahweh come to earth in flesh. I could not get my head around such an idea, so I went to Scripture.
Those who believe this idea seem to think support for it comes from
JOHN 10:30 – I and the Father are one.
However, this appears very unlikely, impossible, in fact, due to what’s found in the rest of Scripture:
 After Yeshua had said these things, he looked up toward heaven and said, “Father, the time has come. Glorify your Son, so that the Son may glorify you—
 just as you gave him authority over all mankind, so that he might give eternal life to all those whom you have given him.
 And eternal life is this: to know you, the one true God, and him whom you sent, Yeshua the Messiah.
It’s obvious from these verses that there are two separate people, there are two different roles & therefore two different titles being used when speaking of them: God & Messiah.
 Going on a little farther, he fell on his face, praying, “My Father, if possible, let this cup pass from me! Yet—not what I want, but what you want!”
Here we see that Jesus is separate from Yahweh, His Father, as He has a different desire – he would like to not have to face what’s about to occur, but submits His will to that of what His Father desires.
Also, the term ‘one’ in John 10:30 can have, & in this case does have, another meaning – ‘unity, united’. And this, in light of all of Scripture, appears to be the better render – ‘I and the Father are united in purpose.’
Support for this perspective comes from
 “And for their sakes I sanctify Myself, so that they themselves also may be sanctified in truth.
 “I am not asking on behalf of these alone, but also for those who believe in Me through their word,
 that they may all be one; just as You, Father, are in Me and I in You, that they also may be in Us, so that the world may believe that You sent Me.
 “The glory which You have given Me I also have given to them, so that they may be one, just as We are one;
 I in them and You in Me, that they may be perfected in unity, so that the world may know that You sent Me, and You loved them, just as You loved Me.
“That they may all be one” – Believers do not become one big conglomerate being when they inherit God’s Kingdom
“That they also may be in Us” – Believers do NOT become one with God or Jesus when they inherit God’s Kingdom
“So that they may be one just as We are one” – there will not be God & Jesus as one being, and all Believers melded into one being, making only two beings in God’s Kingdom.
“I in them & YOU in Me, that they may be perfected in unity” – united, this is the current & future state; united in purpose by God’s Power, all living forever in God’s Kingdom.
And this is why I have begun to use the different terms:
‘God, Father, Yahweh’ for the Father, I also type most pronouns for Father in all caps.
‘Jesus, Yeshua, Messiah’ for Jesus, and pronouns for Jesus are typed with the first letter in caps.
It’s just my way of knowing exactly which of the two I’m reading or writing about, and it goes a bit toward honoring them both as their well-known titles are often confused for lack of proper understanding, and, unfortunately, abused by use as profanity.