That they may know from the rising of the sun, and from the west, that there is none besides me. I am the LORD, and there is none else.
Read Chapter 45
The prophets were not denying the Son (God forbid!), but they wished to cure the Jews of their weakness and, meanwhile, to persuade them to give up their belief in the many gods that did not exist. - "Against the Anomoeans, Homily 5.23"
And inasmuch as this Son is undivided and inseparable from the Father, so is he to be reckoned as being in the Father, even when he is not named. The fact is, if he had named him expressly, he would have separated him, saying in so many words, “Beside me there is none else, except my Son.” In short, he would have made his Son actually another, after excepting him from others. - "Against Praxeas 18"