peacemaker said:
That is misuse of the word perfection. What those people (and Xerxes) really mean is excellence. People often confuse these 2 things.
No, it isn't. You're conflating words and whole concepts. Words have a fixed intension, but an indefinite extension. Their extensions are variable over a particular domain. There are many kinds of "perfection" just as there are many kinds of "infinity."
For example, to take a simplier example, let's take a word like "all." I'll borrow an example from exegetical theology, since that will make it easy.
Christians who deny special redemption typically appeal to the “pantos” (“all’) passages of Scripture. But this confuses extension (referent) with intension (sense). A universal quantifier has a standard intension, but a variable extension. That follows from the nature of a quantifier, which is necessarily general and abstract rather than specific and concrete marker in the text. That’s what makes it possible to plug in concrete content. A universal quantifier is a class quantifier. As such, it can have no fixed range of reference. In each case, that must be supplied by the concrete context and specific referent. In other words, a universal quantifier has a definite intension but indefinite extension. So its extension is relative to the level of generality of the reference-class in view. Thus, there is no presumption in favor of taking “all” or “every” as meaning everyone without exception. “All” or “every” is always relative to all of something. Likewise, a believer in general atonement will call on the "world" passages (like 1 John 2:2), but this is suffers from the same problem. A word like "world" can have qualitative or quantitative meanings, it depends on the extension of the word. Which or what world?