After laying out the claims and motivations of Social Trinitarianism, I develop three new arguments against it. According to the first two, if Social Trinitarianism were true, the Father, Son, and Holy Spirit would have engaged in wrongful deception via both Old and New Testament revelation. I briefly consider the strength of the arguments and some possible replies to them, concluding that they constitute good reasons to deny that version of Trinitarian doctrine. According to the final argument, Social Trinitarianism is incompatible with two central claims of the New Testament.