“Saul good” is a short version of “its all good”, historically meaning a less than satisfactory outcome is permissible.

“Saul Good” is used primarily for its brevity and humor.

In Judeo-Christian beliefs, this could either relate to the first king of Israel “Saul”, but more than likely the Aspotle Paul, who’s original name was “Saul”.

the definition of saul good is to be good with something saul is doing