Finally, your patience and training in Maplestory has paid off after what seems to be a millennia of waiting. The Bishop wields Genesis, an extremely powerful magic attack. People will be swarming you with pleads to join their party for bossing. With the additional boost of Infinity, the Bishop is the most powerful job. And with the new skill Resurrection, you do not just heal anymore.
Although F,P and I,L archmage's attack is 71 basic attack more than Genesis when Element Amplification is taken into consideration, bishops have the advantage of self support skills and party support skills. While the archmages have to fork out twice as much MP for their higher attack skills, therefore, bishops are much more efficient, especially during the late levels when you often kill bosses to level(MapleStory powerlevling).
As spamming genesis at skelegosaurus is not economical and sustainable when training switch between meso training and exp training. Utilize Heal and Shining Ray until you have earned 1 million, buy suitable MP(Maple Story Mesos) pots, and start spamming Genesis once again, until your 1 million is used up. Then, start earning mesos again.