In passing, I have mentioned the â€˜sufficiency formulaâ€™. It is time to look at it more closely. Putting it simply, it states: Christ died for all. He died efficiently or effectively for the elect only, but sufficiently for the whole world. This form of words was invented by the Schoolmen, Peter Lombard and Thomas Aquinas. It was a mistake. Even so, it was adapted and adopted by Reformed writers,1 and many Calvinists have continued to use it.