"Behold, I stand at the door and knock. If anyone hears My voice and opens the door, I will come in to him and dine with him, and he with Me."
Revelations 3:20
The only door that opens and closes from inside is the one of the heart. The Lord Jesus is knocking, on the outside, asking to come in. It's not enough just to hear Him. You need to open the door and let Him come in.