Knock knock. Who's there?
bad thought.
Go away the gate is closed.
Knock knock.
Whose there?
Good thought.
Come in, the gate is wide open.
This is taught in cs sunday school to little children.
they are told to close thier hands tightly like a gate to thier thought, and if a bad thougt tries to enter the gate, they close thier hands, like a gate. tightly to keep the bad thought out of thier minds.
When a good thought comes knocking, the children open thier hands, thier gates to thier minds, to let the good thought in.
Jesus said you must be as little children to enter into the kingdom.
Little children are pure and respond instinctively to good and love.
As we get older we must fight off and throw away the clutter of errorful belief and errorful thought that erring mortal minds send out.