Matthew 6:6c  “…and pray to your Father who is in secret…”

No one else can know your thoughts inside, only God.  Your thoughts are the ones you generate from within yourself.  These are different than the thoughts the outside world throws at you.

What God tells you in your mind and what you tell Him in your mind, is a secret.  Everyone else is left out including humans and angels and spirits and satan.

God is the only one who can meet with you in secret.  All beings whether humans or spirits, can try to keep a secret away from God, but,  He knows everything including every thought and every motive.

Prayer coaching. Jesus, meet with me in secret in my mind.  Guard our conversation from everyone else. God, may You see and hear me in secret and reward me as I pray directly to You.