If the person who died was a Christian,you can remind them that the person is in Heaven now, even before the surviving Christians.And his body will raise to be glorified first, even before the living.Now if the person was unsaved, that's harder, because you want to tell the truth, but without hurting the grieving person by telling them they're in Hell. BUT, sometimes unknown to us,God gives grace and someone is saved before death,that we're unaware of.So you can still be honest by saying ,"well, I'm sure God will do the best thing according to His wisdom."You wouldn't be lying, because like I say, sometimes there are last minute confessions.