Rovagug's Obedience is stated as follows:
Smash an assortment of items worth at least 10 gp, preferably something fragile, aesthetically beautiful, or with significance to a good-aligned deity (particularly Sarenrae). The more devout servants of Rovagug seek out and hoard particularly expensive, artistic, or rare items, such as fine bottles of wine or delicate curios, to smash during their obedience. Roll in the shards of the destroyed items, howling and shouting praises and curses invoking the Rough Beast, until the shards draw blood and your lungs ache. Gain a +4 bonus on attack and damage rolls against objects.
It seems clear that the damage would apply while sundering, but my question is in regards to the bonus to attack. Would you get a +4 to your Sunder from this ability?
Makes perfect sense, too, that a follower of Rovagug would be the best at sundering things :)