First, I can't find YHWH used in the new testament even though it is common in the OT.
Second, to confess the Lord Jesus means that you have to make Jesus Lord and that goes beyond just saying it. Confession indicates making your beliefs of mind and heart one. No, not one as in identical, but one in unity, singleness of purpose.
Futhermore, is isn't making the glorified Christ lord, it is making the lowly, mocked and tortured Jesus who suffered for us your lord. Anyone can kneel before a powerful, glorious being but it is different to confess as lord the one that was stripped, humiliated, beaten and killed as lord.
And I doubt that Marx, Hitler or Stalin did that.
Was/is Jesus a man? Of course, the Bible says so repeatedly.
But was he "only" a man or 'merely' a man? No!
Jesus conception was not of a man's seed, but of a perfectly created one that did not have the sinful nature that we share.
Hbr 2:14 Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same; that through death he might destroy him that had the power of death, that is, the devil;
He took part but did not partake. He shared the flesh but not the blood. The flesh was of Mary but the blood from his Father.
In that he is unique among men. This gave him the ability to resist temptation...and yes, unlike God, Jesus was tempted. He was tempted to resist his terrifying crucifixion but submitted to his Father's will.
Also, he was tempted in all ways like we are...with power, self fulfillment, lust, etc. but he was able to resist because of a strong will and sinless blood.
He had to be a man in order to fulfull the passover laws and be the perfect sacrifice, being one of the sheep of the flock. But it was his shedding of sinless blood that paid the price for our sins.
So you see, IMO it is extremely important to get the details as precise as possible in understanding who God and Jesus are and what it was that they accomplished.
Had Jesus been just another man, or had he been a god-man, he couldn't have fulfilled his role.
>> First, I can't find YHWH used in the new testament even though it is common in the OT. <<
Right. That's what I'm trying to explain: the New Testament was written in Greek, and the Greeks used "Lord" to represent YHWH. Many English bibles follow this tradition, simply capitalizing LORD, to distinguish from the common British title, "lord." But when we proclaim that Jesus is LORD, we are proclaiming that Jesus is God.
>> I doubt that Marx or Stalin did that. <<
They certainly did not proclaim that Jesus was God, or that he rose from the dead. They did, however, acknowledge that Jesus existed. Again, my point is that confessing Jesus LORD means more than acknowledging his existence; it means proclaiming he is God. Notice that Paul says we must confess Jesus Lord AND that he rose from the dead. That means that we have to confess Jesus Lord.
>> Was/is Jesus a man? Of course, the Bible says so repeatedly. But was he "only" a man or 'merely' a man? No! <<
This is why it is baffling that you keep citing references to Jesus being a man as if it were refutation of Jesus being God; Jesus is both God and man.
>> He took part but did not partake. He shared the flesh but not the blood. The flesh was of Mary but the blood from his Father. <<
"Took part" is nothing more than a back-formation of "partake." Also, an unborn baby does not have its own blood. Its blood is the mother's, passing through the umbilical cord. Jesus's blood was Mary's.