The Hebrew root word for the town name "Nazareth" is Netzer.
From the Nazareth city website:
Jesus was known as Jesus of Nazareth which is why the Hebrew name for Christianity is Natzrut. In English, Jesus is called Christ, which means a Messiah; hence the English name Christianity. In Arabic, Jesus is called Massiach, meaning Messiah, and Christians are called Messachin.
The Hebrew root word for the town name "Nazareth" is Netzer.
Yes it is. And a netzer is a particular and peculiar thing directly related to an olive tree. An olive tree can seemingly grow old and die - For many years, there is nothing there but a stump... Suddenly, maybe a very long time later, and some distance from the stump, a shoot will spring up out of the ground. This particular branch, a netzer, has been growing out of the root of the dead stump, underground, all the way along. It is not a clone, it is not a seed, it is genetically, and physically, the very same tree as the old stump.
Thus, as this Is 11:1 passage predicts, the House of David, long nothing but a stump, would grow an underground Branch that would spring up unexpectedly, some distance from it's root, both in time and geography.
But there is more:
The Jews call Christians 'Notzrim', or as we would say 'Nazarenes'. Our FRiend vlad looks only to the transliterated Greek word, instead of relying upon what any Jew could tell him. And that He should be called a 'netzer' has much more to say. The 'Branch prophecies' distinguish between the netzer, the trunk or shoot, and the branches above ground once the tree has grown - A very interesting study, too long for this missive. But that is one way that one finds Christianity in the Old Testament prophets.
[from your quote:] But Netzer also means to keep, which may refer to the citys location on a mountain watching over the Jezreel Valley, frequently a scene of battle in earlier times.
This is also true, and extremely amazing, as another meaning for 'notzrim' is 'watchmen' - Now, understand that Nazareth hadn't even been established when the prophets wrote about the 'notzrim', and one must be careful to rightly divide (watchmen class angels, for instance), but understanding this bit again, points right to the followers of the Nazarene.
To wit: It is also highly necessary, according to the Prophets, that He be called a Nazarene, the 'Netzer', in order to have a following called Notzrim (Nazarenes). So whether 'netzer' or 'watchtower, or watch keeper', the result is exactly the same.
Unless you can show a verse that says “Nazarene” we are already done here. I already know about the Hebrew roots idea. All that does is prove I was right. Matthew is extrapolating based on an oral tradition related to the text.