Jews, if God's name is not to be pronounced, why is it contained in the Shema twice? Why is it part of place names such as Jehovah-jireh?

NWT: (Exodus 17:15, 16) “15 Then Moses built an altar and named it Je·hoʹvah-nisʹsi, 16 saying: “Because his hand is against the throne of Jah, Jehovah will have war with Amʹa·lek from generation to generation.””

KJ21 And Moses built an altar, and called the name of it Jehovahnissi

ASV And Moses built an altar, and called the name of it Jehovah-nissi;

BRG And Moses built an altar, and called the name of it Jehovah-nissi:

DARBY And Moses built an altar, and called the name of it Jehovah-nissi.

EXB Then Moses built an altar and named it ·The Lord Is My Banner [L Yahweh Nissi].

GNV (And Moses built an altar, and called the name of it Jehovah Nissi.)

KJV And Moses built an altar, and called the name of it Jehovahnissi:

AKJV And Moses built an altar, and called the name of it Jehovah-nissi:

LEB And Moses built an altar, and he called its name Yahweh Is My Banner.

TLB Moses built an altar there and called it “Jehovah-nissi” (meaning “Jehovah is my flag”). “Raise the banner of the Lord!” Moses said. “For the Lord will be at war with Amalek generation after generation.”

NOG Moses built an altar and called it Yahweh Nissi.

NABRE Moses built an altar there, which he named Yahweh-nissi;

NLT Moses built an altar there and named it Yahweh-Nissi

WEB Moses built an altar, and called its name Yahweh our Banner.

WYC And Moses builded an altar, and called the name thereof, The Lord is mine enhancer, (And Moses built an altar there, and called it Jehovahnissi,)

YLT and Moses buildeth an altar, and calleth its name Jehovah-Nissi,

And yet all these bibles understand God's name was used and this alter was dedicated to Jehovah / Yahweh. God's personal name and not to an obscure God named 'Lord'.

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Yes why is their names like jehoiakim Jehoshaphat and Elijah in the old Jewish Testament?

Since God's name is not Jehovah, it hasn't been pronounced.

You are incorrect.

The pronounciation of the Tetragrammaton (YHWH) isn't possible because nobody knows the Vowel sounds---I mean nobody, they are lost forever.

Yehovah is incorrect on a number of points:

1) The vowel sounds are unverifiable.

2) The V in Yehovah is not the correct sound in English: the closest match is the letter W. Hence why most scholars now use Yahweh, not Yahveh.

With regard to writing the names of G*d:

Jews are not to corrupt the names of G*d, so instead they write out the name of G*d corrupted, so that they can't defile a name of G*d by accident.

E.g., if you were to right out Michael, and then drop ink upon it, the whole name would be corrupted; whereas, if you were to write Micha*l and ink fell upon it, then there is no corruption of the name Michael, as it wasn't written correctly in the first place.

Any rabbi will tell you there's no "Jehovah."

you don't use a phone in church but you do use a phone. We don't see your point. There are circumstances, which change by person and by time.Christians bow their head at the name of Jesus but it doesn't say "bow' in the text.

Jesus made is Father known to all that would listen,

If Jesus could say Jehovah then all men should say his name.

John 17:25 Righteous Father, the world has, indeed, not come to know you, but I know you, and these have come to know that you sent me. 26 I have made your name known to them and will make it known, so that the love with which you loved me may be in them and I in union with them.”

The pronunciation of YHWH has been lost. "Jehovah" is definitely not how it's pronounced since the third letter, vav, is definitely not pronounced as a V. As a consonant, the letter can be pronounced as either a V or a W, but we know it's not pronounced as a V because of another name, the name YHVH (the third letter spelled with a bet but without a diacritic in the center, which indicates it's to be pronounced as a V instead of a B) being given by God to the angel Metatron because he was so Godly. So, the reason Jews pronounce YHWH (i.e., יהוה) the way Jews do is because it certainly ISN'T how it is actually pronounced, thus keeping Jews from blaspheming or uttering the name of God in vain.

By the way, the reason pronunciation has been lost to time is it went without being said for so long that we don't know any of the vowels. Either that, or it could be all or some of the letters are actually vowels.

Hebrew writing doesn't have letters that are specifically vowels. Every letter in the Hebrew alphabet is a consonant. You're just supposed to recognize the word from the consonants and know how to pronounce it.

That said, four letters in the Hebrew can double as vowels, kind of like how in English Y is a consonant (e.g., "yellow") that can sometimes double as a vowel (e.g., "happy"). Those four letters are aleph, he, vav, and yod.

Aleph is a glottal stop (the sound before U and O when we say "uh-oh"), but it can double as an A. He is an H, but it can double as an A or an E. Vav is a V or W, but can double as an O or a U. Yod is a hard Y, but it cqan double as an I or long E.

The name YHWH is yod, he, vav, he in Hebrew, so all four letters actually could be vowels instead of consonants, which theoretically could make the name of God pronounced something like how we pronounce the word "Iowa," the state to the west of Illinois. If they're not all vowels, then we don't know which are vowels and which aren't. If they're all consonants, then we don't know the proper vowel sounds that are supposed come between them. That means there are literally dozens of possible ways the word YHWH could be pronounced.

That's a new jewish tradition. The bible is filled with israelites calling God Yahweh, including King David. He never forbids it.

No one can write or speak the name of God, you even can't understand it. i.e the Word of God. Scriptures tell us about him, but no scripture has a word of God.