Well the two most common pronouncing's are Yahweh/Jehovah. but these may or may not be right as Israel did not write down the vowel points when they wrote the divine name.
The official website of the Catholic Church states:
“About the 13th century the term ‘Jehovah’ appeared when Christian scholars took the consonants of ‘Yahweh’ and pronounced it with the vowels of ‘Adonai.’ This resulted in the sound ‘Yahowah,’ which has a Latinized spelling of ‘Jehovah.’ The first recorded use of this spelling was made by a Spanish Dominican monk, Raymundus Martini, in 1270” (
www.catholic.com/qa/is-gods-name-yahweh-or-jehovah).
Below are some references to Yahweh:
“The true pronunciation of the name YHWH was never lost. Several early Greek writers of the Christian Church testify that the name was pronounced ‘Yahweh’” (Encyclopaedia Judaica, vol. 7, p. 680).
“Early Christian writers, such as Clement of Alexandria in the 2nd century, had used the form Yahweh, thus this pronunciation of the Tetragrammaton was never really lost. Greek transcriptions also indicated that YHWH should be pronounced Yahweh” (Encyclopaedia Britannica, 15th ed., vol. x, p. 786).
“The pronunciation Yahweh is indicated by transliteration of the name into Greek in early Christian literature, in the form iaoue (Clement of Alexandria) or iabe (Theodoret; by this time Gk. b had the pronunciation of v)…Strictly speaking, Yahweh is the only ‘name’ of God. In Genesis wherever the word sem (‘name’) is associated with the divine being that name is Yahweh” (Eerdman’s Bible Dictionary, 1979 p. 478).
“Such a conclusion, giving ‘Yahweh’ as the pronunciation of the name, is confirmed by the testimony of the Fathers and gentile writers, where the forms IAO, Yaho, Yaou, Yahouai, and Yahoue appear. Especially important is the statement of Theodoret in relation to Ex. lvi, when he says: ‘the Samaritans call it [the tetragrammaton] ‘Yabe,’ the Jews call it ‘Aia’…” (The New Schaff-Herzog Religious Encyclopedia, “Yahweh,” p. 471)
In addition to early Christian sources, evidence for Yahweh is also found in the Nag Hammadi codices, dating from the 2nd to 4th century CE. This library of Gnostic writings was discovered in Upper Egypt, near Nag Hammadi, in 1945. In all, there are over 50 texts within this library. Since they are in Greek, as with the church fathers, they preserve the pronunciation.
But I have become convinced god was not giving a formal name for Himself but simply a description of Himself--- " I am who I am"
Actually, the tetragrammaton first appears in Genesis 2:4