Matthew 17:20 ὁ δὲ λέγει αὐτοῖς· διὰ τὴν ὀλιγοπιστίαν ὑμῶν· ἀμὴν γὰρ λέγω ὑμῖν, ἐὰν ἔχητε πίστιν ὡς κόκκον σινάπεως, ἐρεῖτε τῷ ὄρει τούτῳ· μετάβα ἔνθεν ἐκεῖ, καὶ μεταβήσεται· καὶ οὐδὲν ἀδυνατήσει ὑμῖν.
He said to them, "Because of your unbelief. For most certainly I tell you, if you have faith as a grain of mustard seed, you will tell this mountain, 'Move from here to there,' and it will move; and nothing will be impossible for you.
Noun: Genitive Singular Neuter

Mark 4:31 ὡς κόκκῳ σινάπεως, ὃς ὅταν σπαρῇ ἐπὶ τῆς γῆς, μικρότερον ὂν πάντων τῶν σπερμάτων τῶν ἐπὶ τῆς γῆς,
It's like a grain of mustard seed, which, when it is sown in the earth, though it is less than all the seeds that are on the earth,
Noun: Genitive Singular Neuter

Luke 13:19 ὁμοία ἐστὶν κόκκῳ σινάπεως, ὃν λαβὼν ἄνθρωπος ἔβαλεν εἰς κῆπον ἑαυτοῦ καὶ ηὔξησεν καὶ ἐγένετο εἰς δένδρον καὶ τὰ πετεινὰ τοῦ οὐρανοῦ κατεσκήνωσεν ἐν τοῖς κλάδοις αὐτοῦ.
It is like a grain of mustard seed, which a man took, and put in his own garden. It grew, and became a large tree, and the birds of the sky lodged in its branches."
Noun: Genitive Singular Neuter

Luke 17:6 εἶπεν δὲ ὁ κύριος· εἰ ἔχετε πίστιν ὡς κόκκον σινάπεως ἐλέγετε ἂν τῇ συκαμίνῳ ταύτῃ· ἐκριζώθητι καὶ φυτεύθητι ἐν τῇ θαλάσσῃ· καὶ ὑπήκουσεν ἂν ὑμῖν.
The Lord said, "If you had faith like a grain of mustard seed, you would tell this sycamore tree, 'Be uprooted, and be planted in the sea,' and it would obey you.
Noun: Genitive Singular Neuter