The length of seminary time depends on prior preparation. If a person is coming right out of college, I would think 4-5 years makes more sense. There needs to be time spent in a local church ministering and learning when a man is younger. If a person has been out of college for some time and has varied ministry experiences, I think the time seminary takes can be shorter. Further, it might depend on what a person's undergrad degree is in. If he has gone to bible college and already taken one of both of the languages, this also can speed up his time in seminary. Lots to consider, but one things for sure, seminary is only part of what it takes to train a man for gospel ministry.