"Thy throne is established of old: Thou art from everlasting."
God is sovereign; He is presently on His throne, ruling heaven, and earth. We can understand that truth. But what we need to understand is that our God has always been on His throne through eternity past. His throne was established, and He ruled even before time, in eternity past. God has always been the King ruling in His universe. He has ordered His creation from the beginning of time. Never has there been a time that God was not universally sovereign.
“There never was a time in which [He] was not; there never can be a period in which [He] shall cease to exist” (Adam Clarke).
“Thy throne is established of old….” Think of this: all people who have ever lived on earth from the beginning of time to the present have been under His reign. He has been, He is, and He will always be the absolute Monarch.
“Before the mountains were brought forth, or ever thou hadst formed the earth
and the world, even from everlasting to everlasting, thou art God” (Psalm 90:2).
“Thou art from everlasting”
Before time began, God was already present. From eternity past, God has always been in existence. He has always been.
“Doubtless thou art our father, though Abraham be ignorant of us, and Israel acknowledge us not: thou, O LORD, art our father, our redeemer; thy name is from everlasting” (Isaiah 63:16).
“But thou, Bethlehem Ephratah, though thou be little among the thousands of Judah, yet out of thee shall he come forth unto me that is to be ruler in Israel; whose goings forth have been from of old, from everlasting” (Micah 5:2).
Not only has our God always been here in the past, but He will still be here in the future as well. His eternal Word is clear.
“Blessed be the LORD God of Israel from everlasting to everlasting: and let all the people say, Amen. Praise ye the LORD” (Psalm 106:48).
From eternity past, through all time, and throughout all eternity future, our God is here. How can God’s Word be eternal? It is eternal because the Author is eternal! How can He promise eternal life to His children? His promise is sure because “He is the same, yesterday, today, and forever!”
What a comfort it is to know that the God of eternity, the great Creator, is and will always be my Savior! We can trust this great God.
This verse teaches me that My God is Eternal!
 Adam Clarke, Adam Clarke’s Commentary on the Bible, the electronic version in eSword.