Actually, what Jesus says is:
John 10:
9
I am the gate. Whoever enters through me will be saved, and will come in and go out and find pasture.
Come in and go out. From the pen to the pasture and back again. The Jews are the original sheep; the Gentiles are the others of which He speaks.
It don't say that you added that.. or inferred it..
As Jesus said after saying this.. the apostles didn't understand this.. How could they?..
The sheep pens were not fully developed yet..
Even NOW most don't understand it..