'Mustard seed' in the Bible

And He submitted another parable to them, saying; The kingdom of the heavens is like unto a grain of mustard seed, which, a man having taken, sowed in his field;

and Jesus says to them, On account of your unbelief. For truly I say unto you, If you have faith as a grain of mustard seed, you will say to this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible to you.

Tis like a grain of mustard seed, which when it may be sown upon the earth, is the smallest of all seeds which are upon the earth,

It is like a grain of mustard seed, which a man having taken, cast into his garden; and it grew, and became a tree; and the birds of heaven lodged in its branches.

And the Lord said, If you have faith as a grain of mustard seed. you should say to this sycamine tree, Be thou plucked up, and planted in the sea; and it would obey you.