Who is Lord? Knowing the answer to that question is ultimate truth. It is the single, overarching truth for time and eternity. This truth affects the smallest particle of matter as well as the immeasurable, uncharted universe. The answer to this question is also the answer to the origin and ultimate conclusion of time and space. This ultimate truth is inescapable. We may attempt to ignore this ultimate truth for a time, but eventually our lives and eternal destinies are determined by the answer to the question, “Who is Lord?”
Another way to ask the question is, “Who is in control?” “Who is Ruler, Sovereign, Master, Judge, King…?”
In the New Testament, Jesus is called, “Lord” even as Yahweh God is known as “I Am” and “LORD” in the Old. As the Lord, Jesus not only has “absolute power, but is also absolute authority.”
How we react to the person, position, and power of the Lord reveals what we truly believe.
It is not enough to know the answer to this ultimate question, so you can get it right on an academic exam. Correctly answering the question, “Who is Lord?” may gain points on a test but is pointless if this knowledge remains an abstract concept. One may know the answer to “What is gelato?” even though they never have tasted it, and it is of no consequence whatsoever. How we react to the person, position, and power of the Lord reveals what we truly believe. To know the answer to the question, “Who is Lord?” and not seek to submit to this Lord is utter disaster and eternal ruin. It is an unspeakable tragedy.
A great many people know the correct answer to this question and makes no difference to them at all. They may be proud to get this question right when asked and they may be ready to argue with anyone who disagrees with them, but all of this is meaningless unless they believe the answer with such seriousness it determines the everyday course of their lives.
I submit to you this is the greatest question one will ever answer.
Do you truly believe, “Jesus is Lord”?
Have you unconditionally surrendered your life to Him?
“Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but only he who does the will of my Father who is in heaven. 22 Many will say to me on that day, ‘Lord, Lord, did we not prophesy in your name, and in your name drive out demons and perform many miracles?’ 23 Then I will tell them plainly, ‘I never knew you. Away from me, you evildoers!’
Mt 7:21–23 (NIV)
Jesus is Lord!
 Gerhard Kittel. Gerhard Friedrich, and Geoffrey William Bromiley. Theological Dictionary of the New Testament. Grand Rapids, MI: W.B. Eerdmans, 1985.