G4615 — sinapi
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
sinapi — pronounced sin'-ap-ee
perhaps from sinomai (to hurt, i.e. sting); mustard (the plant):--mustard.
5 occurrences in the KJV.
Matthew 13:31
Another parable put he forth unto them, saying, The kingdom of heaven is like to a grain of mustard seed, which a man took, and sowed in his field:
Matthew 17:20
And Jesus said unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you.
Mark 4:31
It is like a grain of mustard seed, which, when it is sown in the earth, is less than all the seeds that be in the earth:
Luke 13:19
It is like a grain of mustard seed, which a man took, and cast into his garden; and it grew, and waxed a great tree; and the fowls of the air lodged in the branches of it.
Luke 17:6
And the Lord said, If ye had faith as a grain of mustard seed, ye might say unto this sycamine tree, Be thou plucked up by the root, and be thou planted in the sea; and it should obey you.