'Door' in the Bible

"I tell you the solemn truth, the one who does not enter the sheepfold by the door, but climbs in some other way, is a thief and a robber.

The one who enters by the door is the shepherd of the sheep.

The doorkeeper opens the door for him, and the sheep hear his voice. He calls his own sheep by name and leads them out.

So Jesus said to them again, "I tell you the solemn truth, I am the door for the sheep.

I am the door. If anyone enters through me, he will be saved, and will come in and go out, and find pasture.

But Simon Peter was left standing outside by the door. So the other disciple who was acquainted with the high priest came out and spoke to the slave girl who watched the door, and brought Peter inside.