'Secret' in the Bible

so that your merciful deeds may be in secret, then your Father who sees in secret will reward you openly.

But you, when you pray, enter into your inner room, and having shut your door, pray to your Father who is in secret, and your Father who sees in secret will reward you openly.

so that you are not seen by men to be fasting, but by your Father who is in secret, and your Father, who sees in secret, will reward you.