Yes, I agree that baptism for the dead is not a good idea.
But suppose you wanted to use the Bible only. And you wanted to live and practice Christianity in a way that was as close as possible to the earliest Christians. Then it would make sense to explore ways to baptize for the Dead.
I would think they have the same scriptures as us .With a few extra as hidden wisdom or private revelations .
I think a person would first have to define "baptize for the Dead" The scripture uses it in respect to those dead in their trespasses and sin without hope and without God as the baptism of the Holy Spirit giving them eternal spirit life. Hearing the gospel, believing Him our Holy Father in heaven ( not on earth)
Jesus said let the dead bury their own dead. Catholisicim keeps those appointed by a sinner the Pope alive as patron saints. .The bible call those kind of workers with familiar spirits that are falsely used as a living hope in a hope they are communing with who they hope it is.
Because the whole legion of gods not seen in the likeness of men as patron saints. Idol image must be used like that of Rachel , the teraphims she hid from her father, used as a family shrine. lit with many candles to illuminate it at night . . .teraphims must be used when seeking the help of disembodied spirits . (3500 and rising patron saints ) picking up speed these days.
it is simply a form of necromancy ,the Hebrew word darash . Tt can be used in two ways, necromancy as in
seeking the dead by those living having the proper teraphim , or in a God honoring way
seeking after of father living to those dead in their trespasses and sin.
It's not candle light needed but the glory of our father, the other use of darash seeking after our one Father in heaven the one manner we might seek after the things not seen having no form. .Not a multiple of dead fathers no longer here under the Sun.
And when they shall say unto you, Seek unto them that have familiar spirits, and unto wizards that peep, and that mutter: should not a people seek unto their God? for the living to the dead?To the law and to the testimony: if they speak not according to this word, it is because there is no light in them.Isaisah 8:19 -20