  Problems of naming often arose in theological contexts, and Aquinas’s own list of reasons for giving proper names is part of his discussion of whether Christ was appropriately named ‘Jesus’.  The word ‘God’ was the focus of particular attention. Praepositinus of Cremona said that properly speaking it was neither a proper name nor a common term, while other early theologians apparently suggested that it was a proper name, because it referred to a reality that could only be singular. The majority view was expressed by Aquinas, who argued that the word ‘God’ was much like the word ‘sun’. We know that this word has only one referent, and in the case of God, we know that the word can have only one referent; nonetheless, ‘God’ is a common term. In many later logicians ‘God’ appears along with ‘sun’ and ‘moon’ as an example of words that are not singular terms, despite the fact that they supposit for only one thing.