It means I'm dedicated, I'm informed, I'm studied.
In Biblical terms, it means the person is faithful.
If God is something you valued, what I do would be valuable but if I was a student studying to be a doctor then I would be dedicated but because you don't value God, I'm a zealot.
Matthew 6:21 For where your treasure is, there will your heart be also.
If God is your treasure, He says your heart would be there also. When you don't value others doing the work for Him, how can you say you have your heart towards Him?