None can know until they are in the furnace is correct. We have to keep in mind that suffering in this life is a relatively quick period of time compared to what is promised us in the afterlife. It doesn't seem that way when we are in it but we know that our Lord suffered much much more than any of us would ever be asked to for his sake. I think and have prayed quite a bit for those that are currently suffering this in their own lives now all over the sanai peninsula and the ME, India and Pakistan, China who are forbidding worship and outward displays of devotion. It is happening now. From wheat shortages in Venezuela affecting the partaking in the Holy Eucharist to people being murdered in Egypt for professing Christ their savior and God be praised, refusing to recant him at threat of death. I can only pray that if any here should ever be in this position that the Holy Spirit might guide their hearts and give them the words to speak in that time.