Omnibenevolence is sometimes defined as "The quality of always choosing the most morally good option out of several different ones." Literally, omnibenevolent means "all-good." The term is usually applied to God.
Problems with omnibenevolence
Furthermore, defining God as omnibenelovent contradicts the numerous Old Testament verses in which he orders genocide and murder, as well as Isaiah 45:7 in which God says, "I form the light, and create darkness: I make peace, and create evil: I the LORD do all these." (emphasis added).
Out of the numbered deaths in the Bible, YHWH kills 2,391,421 people. Satan only killed the 10 of Jobs family. In Job, Satan is a mistranslation of Accuser, not the rebel of God known in the rest of the Old Testament as Adversary.