In a recent article, Dale Tuggy argues that the two most favoured approaches to explicating the doctrine of the Trinity, Social Trinitarianism and Latin Trinitarianism, are unsatisfactory on either logical or biblical grounds. Moreover, he contends that appealing to ‘mystery’ in the face of apparent contradiction is rationally and theologically unacceptable. I raise some critical questions about Tuggy's assessment of the most relevant biblical data, before defending against his objections the rationality of an appeal to mystery in the face of theological paradox.