Matthew 6:4 ὅπως ᾖ σου ἡ ἐλεημοσύνη ἐν τῷ κρυπτῷ καὶ ὁ πατήρ σου ὁ βλέπων ἐν τῷ κρυπτῷ ἀποδώσει σοι.
so that your merciful deeds may be in secret, then your Father who sees in secret will reward you openly.
Adjective: Dative Singular Neuter

Matthew 6:6 σὺ δὲ ὅταν προσεύχῃ εἴσελθε εἰς τὸ ταμεῖόν σου καὶ κλείσας τὴν θύραν σου πρόσευξαι τῷ πατρί σου τῷ ἐν τῷ κρυπτῷ καὶ ὁ πατήρ σου ὁ βλέπων ἐν τῷ κρυπτῷ ἀποδώσει σοι.
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.
Adjective: Dative Singular Neuter

Matthew 6:6 σὺ δὲ ὅταν προσεύχῃ εἴσελθε εἰς τὸ ταμεῖόν σου καὶ κλείσας τὴν θύραν σου πρόσευξαι τῷ πατρί σου τῷ ἐν τῷ κρυπτῷ καὶ ὁ πατήρ σου ὁ βλέπων ἐν τῷ κρυπτῷ ἀποδώσει σοι.
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.
Adjective: Dative Singular Neuter

John 7:4 οὐδεὶς γάρ τι ἐν κρυπτῷ ποιεῖ καὶ ζητεῖ αὐτὸς ἐν παρρησίᾳ εἶναι. εἰ ταῦτα ποιεῖς, φανέρωσον σεαυτὸν τῷ κόσμῳ.
For no one does anything in secret, and himself seeks to be known openly. If you do these things, reveal yourself to the world."
Adjective: Dative Singular Neuter

John 7:10 ὡς δὲ ἀνέβησαν οἱ ἀδελφοὶ αὐτοῦ εἰς τὴν ἑορτήν, τότε καὶ αὐτὸς ἀνέβη οὐ φανερῶς ἀλλὰ ὡς ἐν κρυπτῷ.
But when his brothers had gone up to the feast, then he also went up, not publicly, but as it were in secret.
Adjective: Dative Singular Neuter

John 18:20 ἀπεκρίθη αὐτῷ Ἰησοῦς· ἐγὼ παρρησίᾳ λελάληκα τῷ κόσμῳ, ἐγὼ πάντοτε ἐδίδαξα ἐν συναγωγῇ καὶ ἐν τῷ ἱερῷ, ὅπου πάντες οἱ Ἰουδαῖοι συνέρχονται, καὶ ἐν κρυπτῷ ἐλάλησα οὐδέν.
Jesus answered him, "I spoke openly to the world. I always taught in synagogues, and in the temple, where the Jews always meet. I said nothing in secret.
Adjective: Dative Singular Neuter

Romans 2:29 ἀλλ' ὁ ἐν τῷ κρυπτῷ Ἰουδαῖος, καὶ περιτομὴ καρδίας ἐν πνεύματι οὐ γράμματι, οὗ ὁ ἔπαινος οὐκ ἐξ ἀνθρώπων ἀλλ' ἐκ τοῦ θεοῦ.
but he is a Jew who is one inwardly, and circumcision is that of the heart, in the spirit not in the letter; whose praise is not from men, but from God.
Adjective: Dative Singular Neuter