In all the16,000 or so available secular and scriptural texts from which all Bibles are translated, it's not YHWH, it is JHWH, and it means Jehovah. Like in hallelujah, the last three letters are a shortened form of Jehovah. Jah is in the Bible some 110 times, and Jehovah occurs some 7,988 times. That is, in an HONESTLY translated copy of God's word, and in all the 16,000 ancient texts. However, most English Bibles have ELIMINATED or almost eliminated all those occurrences of God's PERSONAL name, Jehovah, which He COMMANDS us to use in prayer daily. One cannot do that, if one doesn't now that the name even exists. The name literally means "causes to become", contrary to what false religion teaches. They falsely claim it means "I am". But then, they lie about everything they ever teach, and always have. That's why God calls them "false religion", and Jesus calls them "works of the flesh". God commanded us all to "flee" from them.