Jesus’ warning is so troubling that (rich) commentators have claimed it was a gate in Jerusalem that required a camel to hunch down to make it through. But this explanation originated in the Middle Ages when scholarship wasn’t too good. There is a gate in Jerusalem called “the eye of the needle,” but it was built 1,000 years after Jesus walked the Earth, so He couldn’t have been referring to it.
It is easier for a camel to go through the eye of a needle than for a rich man to enter the kingdom of God. — Matt 19: 24.
But really the eye of the needle is just that: an eye of a needle. It turns out that Jesus loved hyperbole — a rhetorical device of extreme exaggeration to highlight the importance of the saying.
So what is Jesus saying? First, riches can make it very hard for you to make it to Heaven. Second, if rich people are particularly difficult to get saved, God can save even them.
With men this is impossible; but with God all things are possible. — Matt. 19:26.
So the stern warning is also a herald of how wonderful Christmas is, how wonderful salvation is. The rich king (wise men) came to see Baby Jesus bearing gifts of gold, frankincense and myrrh.