Gjallarhorn
N'yog-Sothep
'accept what you have' - if only more people had contentment, however being content doesn't mean one has to be complacent, nor does it mean allowing yourself to be a doormat or treated unfairly. If this is what someone pulls from the Christian faith, they are mistaken and misled.
'do not challenge authority' - I seem to recall Jesus challenging the authorities of his time, particularly the ones of religious faiths. If I recall correctly, this was a large part of why he was crucified. There is a difference also between respecting authority and challenging it. One can fully respect the authority and position of authority another has, while challenging or questioning their actions, beliefs and commands.
"Let everyone be subject to the governing authorities, for there is no authority except that which God has established. The authorities that exist have been established by God. Consequently, whoever rebels against the authority is rebelling against what God has instituted, and those who do so will bring judgment on themselves. For rulers hold no terror for those who do right, but for those who do wrong. Do you want to be free from fear of the one in authority? Then do what is right and you will be commended. For the one in authority is Gods servant for your good. But if you do wrong, be afraid, for rulers do not bear the sword for no reason. They are Gods servants, agents of wrath to bring punishment on the wrongdoer. Therefore, it is necessary to submit to the authorities, not only because of possible punishment but also as a matter of conscience." - Romans 13
"But I tell you, Do not resist an evil person. If someone strikes you on the right cheek, turn to him the other also." - Matthew 5:39
Original sin, anyone?'your present situation is dependent on your past life etc..' - I am at a complete loss as to where this is taught in Christianity. Perhaps you can point me to some scriptures on this.