The three you listed could all be correct but would really only be used in a book. The author would have to set up the context and then within different contexts each one could work in it's own way. In a conversation you would never say any of those though, you would just say; "I'll never be blind again." That's the simplest answer, if you're looking how they could work in a literary sense I could provide that too but I'm not sure if that's what you were looking for or only using it in conversation.

Hello Dancing Bear: All can be correct. There is not substantially any difference between the meanings. Since you have moved from an Agnosticism to a Theism, let's just look at the same meaning in the famous Hymn about the experience of God, as follows: "I.....was blind, but now I see."---- I recommend that you learn this song, "Amazing Grace". You might enjoy the powerful performance of "Amazing Grace on You Tube by "Celtic Woman". It is an excellent way to learn English. Here are the Lyrics: ======================================= Amazing grace How sweet the sound That saved a wretch like me I once was lost, but now I'm found Was blind, but now I see . . 'Twas grace that taught my heart to fear And grace my fears relieved How precious did that grace appear The hour I first believed . . My chains are gone I've been set free My God, my Savior has ransomed me And like a flood His mercy reigns Unending love, Amazing grace . . The Lord has promised good to me His word my hope secures He will my shield and portion be As long as life endures . . The earth shall soon dissolve like snow The sun forbear to shine But God, Who called me here below Will be forever mine Will be forever mine You are forever mine ---Warm Regards, Bruce ============================================================

In my opinion, the grammatically correct one would be number three, “Never would I be blind again.” In your sentence you used the past tense, “swore,” so it should be followed by the past tense of “will” which is “would.” General guideline: Do not shift from one tense to another if the time frame for each action or state is the same. http://www.ecenglish.com/blogs/San-Francisco/?p=729 http://www.englishpage.com/modals/would.html In different contexts any of the three would be acceptable. Inverted word order is often used for emphasis. This type of emphasis is often used in writing and is somewhat formal. It is not customarily used by the young, although those of my age would not find it unusual in conversation. http://owl.english.purdue.edu/owl/resource/601/04/ BTW, did my looking at your profile alter your state? Are you alive or dead?

I'll never be blind again.