Oneness and Trinitarianism both attempt to eliminate the "second power," the Son, as a distinct entity, in order to conform to the Pharisee Rabbis' alteration of Judaistic monotheism. Oneness achieves this by presenting a single being and portraying the Son as a mode of this singular being. The Trinity, on the other hand, does so by depicting a single being with the Son as a persona of this unified being. This contrasts with the belief that the Father is the one Most High God, while the Son also exists as a distinct entity and is subject to the Father. In this belief, the Father and the Son are separate beings, with the Son subordinated to the Father, rather than being modes or personas of a single being as in Oneness and Trinitarianism.
