In the year that King Uzziah died I saw the Lord sitting upon a throne, high and lifted up; and the train of his robe filled the temple. Above him stood the seraphim. Each had six wings: with two he covered his face, and with two he covered his feet, and with two he flew. And one called to another and said: “Holy, holy, holy is the LORD of hosts; the whole earth is full of his glory!” (Isaiah 6:1-3 ESV)
In the English translations of the Old Testament when we encounter the word “Lord” we are actually reading the Hebrew word “Adhōnāy.” On the other hand, when we read the word “LORD,” it is is completely different Hebrew word, “Yehōwāh.” “Adhōnāy” is actually a title for God meaning “sovereign one.” “Yehōwāh” is the sacred name of God. It was the name He used to reveal Himself to Moses at the burning bush. “Yehōwāh” is the unspeakable name, the holy name of God.