Promise or Common Sense

(Psa 122:6 KJV)  Pray for the peace of Jerusalem: they shall prosper that love thee.

(Proverbs 4 also read)

This is a verse that we hear quoted a lot, or at least I do.  It is used to express support for Israel.  As I was reading through today I found myself wondering is this is one of those verses that only applied to ancient Israel or was it still a promise.

I was thinking that Jerusalem was the site of the Temple but if this was written by David the temple had not been built yet.  Since this Psalm does not have an author indicated and we know that Solomon wrote at least one Psalm, it is possible that the presence of the Temple is key.  

So?  Whether this is a promise or not, it is still something that we should be doing.  Jerusalem is in the Middle East.  The Middle East has the potential to pull world powers into war the way the Balkans did in World War I.  We should indeed be praying for the peace of Jerusalem.