The Old testament shows that it was Jehovah who would be pierced on the cross.
Joh 19:37 And again another scripture saith, They shall look on him whom they pierced.
now let us look at the scripture that John is referring to but not quoting.
Zec 12:10 And I will pour upon the house of David, and upon the inhabitants of Jerusalem, the spirit of grace and of supplications: and they shall look upon 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] firstborn.
who is speaking here?
Answer: Jehovah
Thus Jehovah said that it would be himself who is pierced and John bares record that it is Jesus.
Joh 19:37 And again another scripture saith, They shall look on him whom they pierced.
now let us look at the scripture that John is referring to but not quoting.
Zec 12:10 And I will pour upon the house of David, and upon the inhabitants of Jerusalem, the spirit of grace and of supplications: and they shall look upon 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] firstborn.
who is speaking here?
Answer: Jehovah
Thus Jehovah said that it would be himself who is pierced and John bares record that it is Jesus.