There is a danger in saying that truth is always old.
In itself, the statement is certainly true. Truth is always old. Our perception of it, however, is not. Our statements of it, are not necessarily always old. I would add that anything "new" should be viewed with suspicion, and put to the most rigorous test. It should never be accepted simply because it is new, or popular.
Let me give an example: Dispensationalism. (Please read carefully what follows.) A constant criticism is that it is new. Some reject it for that reason alone.
This has always struck me as ironic, coming from Calvinists. Our forefathers met with exactly the same criticism from Romanists, in their day. They responded by citing church fathers who stated or accorded with the same truths, but mostly they responded that Scripture isn't new, so their (Scriptural) view also is not new.
Reject Dispensationalism if you believe it does not accord with the Bible. Put forth your better, more Biblical view. But don't reject it solely because you think it is new.
Take a more specific example of a traditional thought that right-minded folks have held for centuries, if not millennia: seeing Canaan as a type of Heaven, and crossing the Jordan as death. If there is a direct Biblical basis for this identification, I've never seen it.
On the contrary, I find it a distressing equation. Canaan was filled with giants and fortified cities (Numbers 14:38-39). After they entered it, Israel faced many bloody battles, some of which they lost. While living in it, they were tempted to and committed apostasy, and they were severely judged by God.
Eventually, they were thrown out of it.
That's Heaven? I hope not! More importantly, not by anything I read in Scripture!
I love Spurgeon dearly. (Surprise!) He's probably my favorite preacher to read, ever, by a vast margin. But in his March 15 evening devotion, he wrote: "When I cross the Jordan, the work of sanctification will be finished...." Where did this imagery of Jordan/death start? If it's in the Bible, I've missed it. Crossing the Jordan certainly presented no crisis in Israel's sanctification.
Or again, in Spurgeon's March 13 morning devotion, the great preacher encourages the downtrodden by quoting a couple of lines:
"A few more rolling suns, at most,If that's true, I'm not encouraged! Is that what going to Heaven is? I'm going to go from a land where I constantly face my own miserable pronenesses to sins within, and disheartening battles without -- to a land where I'm constantly going to face my own miserable pronenesses to sins within, and disheartening battles without? There will be giants and pagans and well-fortified villages in Heaven? There's a chance I might be thrown out?
Will land thee on fair Canaan’s coast."
As Jonathan Edwards once was heard to remark, "Yikes!"
Okay, Edwards probably never said that, but I do. Of course I know what Spurgeon meant, and what he meant was true. But what he said was simply, in my view, a mistake. But it is old! It's very old! Old, yet mistaken. It happens.
I want old truth, only old truth. As old as the Bible. Let us just make sure that our "old truth" really is that old, and not just an old misconception that should have been reconsidered and retooled ages ago.