Jesus and Jehovah are the same God. The Old Testament is the incomplete Revelation of Jesus Christ. The New covenant is the fulfillment of the Old in Him, the fullness of the Revelation of God in Christ Jesus. Amen.
15 He is the image of the invisible God, the firstborn over all creation. 16 For by Him all things were created that are in heaven and that are on earth, visible and invisible, whether thrones or dominions or principalities or powers. All things were created through Him and for Him. 17 And He is before all things, and in Him all things consist. 18 And He is the head of the body, the church, who is the beginning, the firstborn from the dead, that in all things He may have the preeminence. Colossians 1:15-18