What is the first parable Jesus taught?
The sayings gospels are pretty accurate, the synoptic gospels (Matthew, Mark, and Luke) repeat those sayings and they are very much in agreement. What they don’t agree on is the historical details – if Yeshua went to point A then to C and then to B or A to B to C, etc. So since we know by internal evidence that the biographic details of the gospels are unreliable, we also don’t know which parable was taught first.