Yahweh - a Christian perspective
God goes by many different names, each of which has a special significance. Among the names He revealed to His people are Yahweh and el-Shaddai.
Bible Concordance :: LORD (in all capital letters)
Used in this Bible to refer to the personal name of God. The Hebrew word for this name is Yahweh, which means "I AM WHO I AM." This name tells us that God is always with his people.
Bible Concordance :: Hallelujah
Means "Praise the LORD!" This word is made by putting together two Hebrew words: Hallelu (meaning "praise") and Yah (for the name of God, "Yahweh," or "the LORD"). Psalm 146:1; Revelation 19:1-8