The Hebrew name YHWH, which the King James Version renders LORD, is derived from the verb "to be" and means the Eternal, the Ever-Living, the Self-Existent One, the One who was, is, and is to come. Rabbinic sources explain it as combining the Hebrew words for was, is, and will continue to be, so that God's name encompasses past, present, and future, in accord with Malachi 3:6, Hebrews 13:8, and Revelation 1:8. No one can be certain of its original vowels or pronunciation, since the pronunciation has been lost. Most think Yahweh is probably correct, but the Hebrew Names groups disagree among themselves, using forms such as Yahvah and Yahshua. The name's importance lies in its meaning and the authority of the One who bears it, not in a particular sound, as though a Hebrew pronunciation were a secret password. Psalm 83:18, which says "whose name alone is JEHOVAH," does not teach that God has only one name. The word "alone" modifies "thou," meaning that God alone has the right to the name YHWH. Psalm 68:4 uses the short form Jah and also shows that Elohim is God's name. In Exodus 3:15 the complete name is YHWH Elohim, given to Israel in Hebrew because they spoke Hebrew. Jesus and the apostles never used the Hebrew YHWH, and the Holy Spirit inspired the Greek New Testament to use Greek words for the names of deity. No New Testament manuscript contains YHWH.