What part of this Gospel do you reject?
I reject no part of that Gospel, naturally, but it never suggests that there is a multitude of "Gods" or "Fathers" of which the Jews worship the wrong one. The question is not that of who honours the Father more or correctly, but rather of whether one worships the one true God or not. I am not arguing that worship of God which rejects the Son is somehow worthy or proper. Nothing of the kind. I am saying that this whole debate which comes up periodically of whether the Jews worship the same God as us is strange. Of course they do. The fact that they do not know him as we do does not mean that they have somehow switched their worship to a different God. They are just wrong about him. It is enough to say so without overstating the case and trying to say that they have invented a new God to worship.
So why join them in their error?
The pagan dancing around the stick may not know Jesus Christ, but most Jews and Muslims do know about Him; and they have rejected Him.
He who honoureth not the Son, honoureth not the Father, who hath sent him. John 5:23