Jesus uses the beautiful metaphor of the sheep pen. John 10

The secret place is like the sheep pen.

He is the door and we enter by Him. John 10:9

Jesus is the key to entering the secret place.

It is an open door that no one can shut. Revelation 3:8

This means no matter where we find ourselves it is available to us.

I like to think I can leave all my concerns and cares with Him at the door, and be ready to simply focus on the Lord, to give to the Lord alone, to Worship once I am inside.

We come in and go out. John 10:9

That is exactly what it is like.

We come out and find pasture. John 10:9 See section on Pasture in Course Part 2.