If Christians want to stop the ‘Christmas wars’ they could just stop fighting. After all, it takes two opposing parties to start a war. Maybe we didn’t start it, but we sure are complicit in it’s continuance
What if the atheist/humanist side’s real issue is being exposed to the God the Bible tells us they hate the God they know exists (the Bible tells us that too).
If thats true (See Romans 8:7 & Romans 1), perhaps they need to stop hating the God they know.
One way for that to happen would be for Christians to stop ‘warring’ with them and pray a simple prayer that God would open hearts to receive the Gospel and that he would send someone to share that message.
And BTW, if you are one of His children through faith, having turned your back on sin and turned to Christ, sharing the message of the cross is actually the best gift you could give anyone who doesn’t know Jesus as Savior and Lord.