“”This is part of the infinite goodness of God, that he should allow evil to exist, and out of it produce good.
|—St. Thomas Aquinas|
Being perfectly good must entail being good in all ways at all times and towards all other beings 
But somehow, for complicated reasons, God does not get round to stopping all of those earthquakes, hurricanes, and other natural disasters. Furthermore, instead of preventing rape, he cares more about producing babies in the process.
In parts of the Bible, God is shown as a being who is anything but omnibenevolent. For example, the Book of Job in the Old Testament involves God tormenting Job, despite all Job's righteousness, just to win a bet with Satan. The Book of Revelation also shows a lack of omnibenevolence, as it depicts most of the world being thrown by God into a lake of fire.