Is he the same born again religion that you are?......if NOT....then his asking you to marry you is NOT something that God would will.....

Another consideration....if you end up in his country in his parents house (you lived with them before?).....the thing is that if you end up being treated as badly, then you will have no where to go to escape the bad marriage & you may not be allowed to leave the country.....depending on what country you are moving to & the religious beliefs that are practiced in the country.

Honestly, I wouldn't even bother telling him what you need....I would just say, "I have considered your proposal & it's NOT the right thing for me to go back & remarry you". People just don't change like that & your thinking that he has changed is just really wishful thinking & probably has nothing to do with reality.....& living in the same country if you go to his.....it going to leave you with absolutely NO SUPPORT to turn to if there is a problem.....they you will only have to figure out how to get home again. Doesn't sound wise at all & bothering to waste your time to tell him what you need is pointless also IMO.