What little family I have left - my Sister and her family - are all super Christians too. I love my Sister, but after several attempts by her, over the years, to lure me in, I finally closed that book. I wrote her a couple long letters asking her to cease and desist all hints, cards, books, blessings - all that shit.
Writing helps me remember all the points I might forget on the phone, and gave my Sister time to digest the information.

I think she finally got the message this time. We get on fine otherwise - but this stuff was really getting old !

You're going to burn in Hell. Forever. And ever. And ever. At least that's what they believe. I know it's so annoying, so illogical. I'd try asking them how long forever is and challenging that belief. Or you can just draw a line with them.

i Love you very much and I have never attempted to convert you to my believes so when we meet let's just have fun and not discuss religion again. This worked for me ,hope it does for you.

"so why do they keep on trying to convince me to be a God fearing Christian."

Because if they don't, their god who loves you so much will burn and torture you for all eternity for using the free will he gave you and not accepting the salvation his own son, who is also him, was tortured to death to buy for you, because a long time ago a woman you are descended from listened to a talking snake and ate a magic apple.

All perfectly sensible and reasonable when you think about it.