'Gate' in the Bible

"Truly, I tell all of you emphatically, the person who doesn't enter the sheepfold through the gate, but climbs in by some other way, is a thief and a bandit.

The one who enters through the gate is the shepherd of the sheep.

It's to him the gatekeeper opens the gate, and it's his voice the sheep hear. He calls his own sheep by name and leads them out.

So again Jesus said, "Truly, I tell all of you emphatically, I'm the gate for the sheep.

I'm the gate. If anyone enters through me, he will be saved. He'll come in and go out and find pasture.

Peter, however, stood outside the gate. So this other disciple who was known to the high priest went out and spoke to the gatekeeper and brought Peter inside.

The young woman at the gate asked Peter, "You aren't one of this man's disciples, too, are you?" "I am not," he replied.