Thy throne is established of old: thou art from everlasting.
God never began to be. I want you to kick that word “began” around a little bit in your mind and think about it. “In the beginning God created the heaven and the earth” (Genesis 1:1), but God Himself never began to be! “Began” is a word that doesn’t affect God at all. There are many concepts and ideas that don’t touch God at all, such as the concept of beginning or creation, when God spoke and things began to be. “In the beginning God created”—but before the beginning, there wasn’t any “beginning”; there wasn’t any “before”! The old theologians used to say that eternity is a circle. Round and round the circle we go, but back before there was any circle, God was!
God didn’t begin to be—God was. God didn’t start out from somewhere—God just is….
But there never was a time when God was not! No one said, “Let God be”! Otherwise, the one who said “Let God be” would have to be God. And the one about whom He said “Let him be” wouldn’t be God at all, but a secondary “god” who wouldn’t be worth our trouble. God, back there in the beginning, created. God was, that’s all! AOGII057-058
Lord, You are beyond my comprehension and worthy of my praise. Thou art from everlasting, the great I AM. Amen. 
Yahweh’s Kingship on Earth (93:1c–2)
1c–2 The Lord established his kingship on earth when he created the “world” (tēbēl; cf. 24:1). The doctrine of God the Creator stands in stark contrast to the pagan teachings on chaos, primordial forces, and random happenings. Yahweh is the Creator-God. He has “established” (tikkôn) the world, and it will not reel and totter under the duress of hostile forces (10:6; 104:5), for Yahweh has established his rule over it. The nations may rage against his rule, but it will not fall (2:1–4; 46:6). His throne is “established” (nākôn, GK 3922, v. 6, from kûn, as is tikkôn above). Yahweh is “from all eternity” (90:2), but his rule over earth has a historical dimension (“long ago”; cf. Isa 44:8; 45:21; 48:3, 5, 7–8); therefore the psalmist considers that the “throne” was established when creation took place.
93:1, 2 The songs that will be sung when Jesus is crowned Lord are all ready—and this is one of them. It anticipates the glorious day when Israel’s Messiah proclaims Himself King. He will be clothed with majesty, in contrast to the lowly grace which characterized Him at His First Advent. He will openly clothe Himself with the strength that is needed to reign over the world. And world conditions will then be established on a firm, stable basis, no longer subject to vast moral and political convulsions.
Of course, the throne of Jehovah has always existed, but it has not been as clearly manifest as it will be when the Millennium dawns. The King Himself too is eternal, and as His authority had no beginning, so it will have no end.
93:2 from everlasting. God has no beginning; He is uncreated. This conception of the eternal kingship of God stands in stark contrast with the theology of Mesopotamia and Canaan. In these neighboring regions, the power of the gods varied according to changes in the political arena.
 Tozer, A. W., & Eggert, R. (2015). Tozer on the almighty god: a 365-day devotional. Chicago, IL: Moody Publishers.
 VanGemeren, W. A. (2008). Psalms. In T. Longman III & D. E. Garland (Eds.), The Expositor’s Bible Commentary: Psalms (Revised Edition) (Vol. 5, p. 708). Grand Rapids, MI: Zondervan.
 MacDonald, W. (1995). Believer’s Bible Commentary: Old and New Testaments. (A. Farstad, Ed.) (pp. 692–693). Nashville: Thomas Nelson.
 Sproul, R. C. (Ed.). (2015). The Reformation Study Bible: English Standard Version (2015 Edition) (p. 941). Orlando, FL: Reformation Trust.