In what respect are students “on your radar” spiritually? They might know the gospel, but do they know the gospel deeply enough to avoid hell? Will they automatically go to heaven? (Here include items like student chapel attendance, extra Departmental student events, having students to your home, anything outside of class that appropriately builds a potentially mentoring relationship with students.) Even on sabbatical I maintain contact to encourage them. John Walvoord read your note … interesting. I think you have to decide whether your beliefs are well-founded in your mind at this point, or whether they are still emerging. If the latter, then you might leave the doctrine of hell behind.