Christ forgave Peter for denying Him three times.I hope He'd forgive me for doing it once (under great duress).But then,my denial wouldn't be "heartfelt"...if that makes a difference.
I don’t know, I don’t think that I would chance it, based on the scenario during the Tribulation when we’re told in revelation that people will have to either take the mark or be killed for their belief, and there’s no “taqiyya” for Christians in that situation. I would just pray that God would give me the grace and strength of His Holy Spirit to bear losing what I can’t keep anyway-my mortal life-in order to not lose my immortal soul. The early Christian martyrs made that choice. I know we Americans in modern days don’t even have an inkling what persecution for one’s faith is, but I pray that when it came to a choice between my flesh which will die and return to dust anyway, and my soul which will either spend eternity with my Saviour or in eternal torment, God’s Holy Spirit would see me through. There is a verse in the Bible which I can’t just remember at this time, which says as much. (And there’s a good reason for memorising as much Scripture as possible, against the possible day when we don’t have access to God’s Word in print).