If a gun is put to your head and you are threatened to convert to something like another religion, you lied out of fear. By swearing allegiance to that religion do you genuinely believe in their theology or are you just saying that to keep from being martyred? Can you choose to TRULY believe a new theology/religion under pressure or would you have to fake it only? Conviction comes from outside information that convinces you right? One can’t will their mind into receiving something that they aren’t convinced of internally. So it is really possible for someone to make themselves believe something? Don’t people usually only believe something they are told, not because they will themselves into believing it? Can you FORCE yourself to believe in Santa Claus despite believing the evidence that he doesn’t exist? If crusaders and colonizers ministered to non-Christians in love with the free option to reject, it would be more effective than threatening them in order to coerce conversion.