Cut to the chase: There is no way in hell that the name 'Jehovah' has anything to do with the New Testament. The New Testament was written in the 1st century...the hybrid name 'Jehovah' was invented nearly 1,300 years later by a Catholic Spanish Monk in late 13th century.
With the name 'Jehovah' out of the picture...just focus on the name 'Jesus'...very simple!