What C.S. Lewis called "mere Christianity" - the parts we can all agree upon.
And you're right, the barbarians are at the gates. I find I have far more in common with the orthodox (that is to say truly believing) Baptist, Evangelical, Russian/Greek Orthodox, or Jew than with the watered-down middle-of-the-road liberal denominations or with the frankly liberal screaming loons like the Episcopalians (of which I used to be one - but not liberal and rarely screaming).
For by grace are ye saved through faith, and that not of yourselves, it is the gift of God, not of works, lest any man should boast. (Ephesians 2:8,9) Not by works of righteousness which we have done, but according to his mercy he has saved us, by the washing and renewing of the Holy Ghost. (Titus 3:5) For ther is one God and one mediator between God and man, the man Christ Jesus. (1 Timothy 2:5)