This belief is reiterated in the New Testament. Even the demons believe that and shudder. There is really no debate on this point. Jewish belief has always been anchored to monotheism. In other words Jews have always affirmed that there is only one God.
Christians stand in that same tradition.
Sometimes the claims are bold and direct. He was with God in the beginning. In him was life, and that life was the light of men. You have not lied to men but to God. In this passage Peter begins by saying that Ananias has lied to the Holy Spirit.