In certain contexts, one can define "validity" in deductive terms: if the premises are true, then the conclusion necessarily follows from the premises. Richard Arthur defines validity as something along these lines (An Introduction to Logic, page 29). If an argument is valid, "it would be inconsistent to deny an argument's conclusion while simultaneously accepting its premises."
Here is a short valid argument in opposition to the idea that God wills/ordains evil:
1) God only wills actions that bring honor to his name.
2) No hypocritical actions bring honor to the name of God.
3) Therefore, God does not will hypocritical actions.
See Romans 2:24.
Another slightly different version of this argument:
1) All acts willed by God bring honor to his name.
2) No hypocritical acts bring honor to the name of God.
3) Therefore, God does not will hypocritical acts.