I think there's a general misunderstanding of what the word preserve means. God promised to preserve His word. What does this mean? The word preserve means to save from decay, to keep in a sound state, to defend from corruption. Often times one sees the preserving of fruit as an illustration of preserving something. The idea is to keep that fruit from spoiling, from seeing corruption, and to keep it in a sound state that it can be eaten safely at a later date. Now, the way I see many people explaining God's preserving of the scriptures is that they have been allowed to see corruption, and they were allowed to fall into an unsound state, and now it is up to us to remove the errors from God's word and re-establish it in a sound state free from error and corruption. That's not preservation. Imagine me telling you that I'm going to preserve some figs in a jar and you can eat them in two months. However, before you can eat those figs, you are going to have to remove the spoilings from the jar. Your response to me would be that I didn't do a very good job of preserving those figs if they have been allowed to spoil in some fashion. Yet this is what many claim God did with the scriptures, He allowed them to spoil to a certain degree and man must remove that which is spoiled. I'm not arguing in this thread for any translation so please don't go there. I'm saying what many people call preservation isn't preservation at all.