Annihilation of the soul, page-62

All this is irrelevant as far as understanding what the Bible teaches a soul is. Perhaps it is best explained that in English when the statement is made so and so has 'lost their life', no one asks if a search party should be organized to look for it. Showing that life and soul are synonyms, is the SOS 'save our souls' distress call.
You have no grounds for preaching irrelevance because your lords and masters at Watchtower constantly proclaim irrelevant failed prophecies and nonsensical doctrine much of which has practically no scriptural backing.