'Invalid' in the Bible

And there was one man there who had been an invalid for thirty-eight years.

The invalid answered, “Sir, I have no one to put me in the pool when the water is stirred up, and while I am coming [to get into it myself], someone else steps down ahead of me.”

Now the man who had been healed did not know who it was, for Jesus had slipped away [unnoticed] since there was a crowd in that place.