As a title of our Lord there are two words in the original so employed. (1) Lord (Greek, despotes), meaning Master-evidently a strong word. It only occurs 5 times. In every case it indicates our Lord. (2) Lord (Greek, kurios) occurs nearly 100 times, meaning Lord, Master. Occasionally it refers to an earthly lord or master, but outside these few exceptions it very generally refers to the Lord Himself. In the Gospels the single word, is used, but in the Acts and the Epistles, it is generally found in combination with the words, Jesus or Christ.
How good and right it is that the day is coming when every knee shall bow, of things in Heaven, of things in earth, of things under the earth, of things heavenly, of things celestial, of things infernal, and when every tongue shall confess that Jesus Christ is Lord (Kurios) to the glory of God the Father. (Phil. 2:10, 1110That at the name of Jesus every knee should bow, of things in heaven, and things in earth, and things under the earth; 11And that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father. (Philippians 2:10‑11)).