Well, at least some Christian's law.   

You can look at some basic Christian values, without the label, and they seem like reasonable ethics for a civil nation.   You don't murder, you don't steal, you treat your neigbbor the way you would like to be treated, you honor your spouse (which is a civil contract as well), you help the sick, the poor, women and children.  Don't point out bigotry while failing to recongize you own.  Those who are not of your faith should still be treated with respect and compassion..  it's a pretty long list if a person is willing to look past some of the sanctamonious individules who believe only they are 'the chosen'  

 Are any of these things inherently just Christian values?    You might also say those are sectarian values adopted by the Christian church  Who cares about  the source of inspiration, when the values are so similar in intent?