If I'm feeling exceptionally snarky, I might respond with this...

Delete those contacts if you can.

I would ignore it if it isnt directed to you

1. There is no proof of your first assertion and considerable evidence which casts doubt apon it.
2. "We all believe in in him" is contradicted by the evidence, both of my [your] presence and the national statistics.
3. Belief without evidence, AKA blind faith, is not the best way to make judgements, nor national policy. Which leads to:
4. Our systems, language, and laws have a pro-christian bias built into them. This makes disagreement more difficult so that it often comes out as mockery.
5. Mockery of point 3 is both justified on the grounds of its irrationallity, and its historical tendency to have those who dare to think as I [you again] do burnt at the stake.

"I realized that no woman can be turned into salt," my Catholic-raised mother said, explaining why she became an atheist in nursing school.

"My Facebook page so I'm free to post my opinions. That is how it works."

Belief means nothing evidence is the only thing that matters.

There is more evidence for the existence of Sasquatch than there is for Jesus.

I'd just say, "Prove it."

Ummm, this probably won't help, but I'm afraid I'd have to tell them to go f*** themselves.

IMHO, the phrasing seems like that of a child of someone not that bright. There is no point arguing, logic doesn't work for believers, they believe despite fact not because of them. Do what I do, I have multiple FB accounts, I have one for people who want to be my FB friends, rather than hurt their feelings, I "friend" them on a fake account to which I ocassionaly make a post. My real contacts are on a FB profile that is completely hidden. I have it to keep an eye on my kids and to plan events. We only post jokes and other important stuff.

I had this one today
"Just don't be a hypocrite on gun control. Abortion is murder in the Lords eyes...",

"Lord's"...

I responded "I'm an Atheist". Thankfully not a friend.

Sometimes keeping it simple isn't a bad thing. What exactly bothers you about that particular statement? That they allude to everyone believing in Jesus? You could simply correct them and state that, that isn't so. They can't really argue anything further if that's all you say.

I just tell them he may have been real but we haven't figured out which one. I'm more inclined to believe in the others.
That drives them batshit crazy and might even wake one or two up.

[listverse.com]

I would respond with, Jesus wasn't real, there is zero historical evidence, the bible isn't moral, god doesn't exist, and what you believe is irrelevant to the truth.

Was it a joke?

I think a simple "NO" would do. Perhaps throw in a joke about "Christ on a stick", just to punctuate it.

Life is full of interesting stories and fairy tales. I have heard people say that they saw a UFO, yet others claim that a man walked on water, some even said that they saw a man flying. I have never seen any of these things and doubt that I ever will and no doubt believers would admonish me to have faith in such matters.

Unless the statement was aimed at you I would simply ignore it. Where would believers be without unbelievers who often unwittingly reinforce their beliefs.

You are correct – Jesus is real, but he is not a god and neither is anybody else.

oh yeah and the wolf in the sheep clothes is actually a sheep too
in this scenario to end the discusion i will say sorry and move on
do you know sorry is such a strong word.
I am sorry- did i lose my dignity or shame or pride or ego or etc etc
But sorry -silence is a powerful word

Why do you have reply to something you don’t believe in? Acceptance that others have their own perception is a honorable and good thing.

Okay.

I wish i could keep my emotions seperate enough to help you.

I do feel for you. It's been an endless day of terribleness on FB and my niece was just fired - so I have to keep in touch thru social media.

I'm sure someone will have your answer.