Irrelevant, immaterial and incompetent BOTH logically and theologically.
Theologically because Jesus is Jehovah the Son, logically because an apple (=old covenant) is obviously NOT an orange (=new covenant) so OF COURSE they are very different:
31 Behold, the days come, saith the LORD, that I will make a new covenant with the house of Israel, and with the house of Judah:
32 Not according to the covenant that I made with their fathers in the day that I took them by the hand to bring them out of the land of Egypt; which my covenant they brake, although I was an husband unto them, saith the LORD:
33 But this shall be the covenant that I will make with the house of Israel; After those days, saith the LORD, I will put my law in their inward parts, and write it in their hearts; and will be their God, and they shall be my people.
34 And they shall teach no more every man his neighbour, and every man his brother, saying, Know the LORD: for they shall all know me, from the least of them unto the greatest of them, saith the LORD: for I will forgive their iniquity, and I will remember their sin no more. (Jer. 31:31-34 KJV)
Jehovah said "they shall look unto me whom hey have pierced....they pierced Jesus:
4 In that day, saith Jehovah...and they shall look unto me whom they have pierced; and they shall mourn for him, as one mourneth for his only son, and shall be in bitterness for him, as one that is in bitterness for his first-born. (Zech. 12:4-10 ASV)
Isaiah saw Jehovah = He saw Jesus:
39 Therefore they could not believe, because Isaiah said again:
40 "He has blinded their eyes and hardened their hearts, Lest they should see with their eyes, Lest they should understand with their hearts and turn, So that I should heal them."
41 These things Isaiah said when he saw His glory and spoke of Him. (Jn. 12:39-41 NKJ)
5 Then said I, Woe is me! for I am undone; because I am a man of unclean lips, and I dwell in the midst of a people of unclean lips: for mine eyes have seen the King, Jehovah of hosts. (Isa. 6:5 ASV)
You put this in the wrong forum, this about End Times.