Of course. The more than 5000 times it is used in the OT, makes it VERY clear, it is Elohiym's personal name.
Ex 6:3 And I appeared unto Abraham, unto Isaac, and unto Jacob, by the name of God Almighty, but by my name JEHOVAH was I not known to them.
Jehovah is The supreme being, the Creator, and Jesus is His servant;
Isa 42:1-8 Behold, My servant, whom I uphold; My chosen, in whom My soul delighteth: I have put My Spirit upon him; he will bring forth justice to the Gentiles. 2 He will not cry, nor lift up his voice, nor cause it to be heard in the street. 3 A bruised reed will he not break, and a dimly burning wick will he not quench: he will bring forth justice in truth. 4 He will not fail nor be discouraged, till he have set justice in the earth; and the isles shall wait for his law.
5 Thus saith God Jehovah, He that created the heavens, and stretched them forth; He that spread abroad the earth and that which cometh out of it; He that giveth breath unto the people upon it, and spirit to them that walk therein: 6 I, Jehovah, have called thee in righteousness, and will hold thy hand, and will keep thee, and give thee for a covenant of the people, for a light of the Gentiles; 7 to open the blind eyes, to bring out the prisoners from the dungeon, and them that sit in darkness out of the prison-house. 8 I am Jehovah, that is My name; and my glory will I not give to another, neither My praise unto graven images.