1000 Difficulties do not amount to one doubt.
I think God allows these difficulties to persist, sometimes in a nagging way, so that we may be open to continuing our search for Him. He is, after all, very much a hidden God who wants to be found, but wants us to make the requisite effort to find Him.
Likewise, I think God opens the door to doubts, real and serious doubts, for the simple reason that God gives us the freedom to choose between faith and unbelief. God always gives us the choice … but how would we have choices if it were not possible to doubt because our beliefs were ironclad convictions from which we could not budge? A friend of mine recently opined that John Paul was incapable of doubt. I’m not so sure. I think he was capable of doubt, but did not choose it.
On another note, I have known several people who have left or have considered leaving the Church because they find the sacrament of the Eucharist simply unbelievable.
Has anyone here had similar doubts, or does anyone know how this doubt in particular might be countered other than by reassuring reference to scriptural passages?
You don’t overcome doubts by sitting on them. If you’re afraid there’s a monster under your bed, don’t fret about it or wish it away, LOOK! God gave us a will and an intellect for a reason, and we will be accountable for using them. There’s no reason to stop at scriptural passages. The Eucharist is also backed up by the say-so of the Church and Chruch Fathers:
Further, it might help to see the reasons why we trust the Catholic Church and her Scriptures (in that order):
Further, it might help to have reasons for our faith in God:
The Church rightly points out that we can come to faith through reason. (CCC para 156-159) Faith and reason are allies. Faith is not based on the various comings and goings of emotion.
"1. Reason is the friend of divine authority, which can neither deceive nor be deceived, but not necessarily of human authority, fads, and fashions
Reason is the friend of faith in this divine authority, but not of naivete. Thus reason leads to the faith and away from the cults.
Reason is the friend of hope, but not of human wishful thinking.
Reason is the friend of agape (love) but not of eros (selfish passion)…"
From the Handbook of Chrisitian Apologetics, by Peter Kreeft
Do you have this book yet?