Mark 4:31

It is like a grain of mustard seed, which when it is sown in the earth, is one of the least of the seeds that are in the earth.

Matthew 13:31-33

He proposed to them another parable, saying, The kingdom of heaven is like a grain of mustard-seed, which a man took and sowed in his field:

Luke 13:18-19

Then said he, To what is the kingdom of God like, and to what shall I resemble it?

Acts 2:41

Then they, gladly receiving his word, were baptized; and there were added to them that day about three thousand souls.

Acts 4:4

But many of them who had heard the word, believed. And the number of the men was about five thousand.

Acts 5:14

And multitudes both of men and women believing were the more added to the Lord:)

Acts 19:20

So powerfully did the word of God grow and prevail.

Acts 21:20

And having heard it, they glorified the Lord, and said to him, Thou seest, brother, how many thousands of believing Jews there are, and they are all zealous for the law.

Revelation 11:15

And the seventh angel sounded, and there were great voices in heaven, saying, The kingdom of the world is become the kingdom of our Lord and of his Christ, and he shall reign for ever and ever.

Revelation 20:1-6

And I saw an angel descending out of heaven, having the key of the bottomless pit, and a great chain in his hand.

Treasury of Scripture Knowledge

Summary

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:

Bible References

Like

Matthew 13:31
He proposed to them another parable, saying, The kingdom of heaven is like a grain of mustard-seed, which a man took and sowed in his field:
Luke 13:18
Then said he, To what is the kingdom of God like, and to what shall I resemble it?

Is less than

Acts 2:41
Then they, gladly receiving his word, were baptized; and there were added to them that day about three thousand souls.
Acts 4:4
But many of them who had heard the word, believed. And the number of the men was about five thousand.
Acts 5:14
And multitudes both of men and women believing were the more added to the Lord:)
Acts 19:20
So powerfully did the word of God grow and prevail.
Acts 21:20
And having heard it, they glorified the Lord, and said to him, Thou seest, brother, how many thousands of believing Jews there are, and they are all zealous for the law.
Revelation 11:15
And the seventh angel sounded, and there were great voices in heaven, saying, The kingdom of the world is become the kingdom of our Lord and of his Christ, and he shall reign for ever and ever.
Revelation 20:1
And I saw an angel descending out of heaven, having the key of the bottomless pit, and a great chain in his hand.