Luke 6:2

But some of the Pharisees said, Why do you do what it is not right to do on the Sabbath?

Matthew 12:2

But the Pharisees, when they saw it, said to him, See, your disciples do that which it is not right to do on the Sabbath.

Exodus 22:10

If a man puts an ass or an ox or a sheep or any beast into the keeping of his neighbour, and it comes to death or is damaged or is taken away, without any person seeing it:

Exodus 31:15

Six days may work be done, but the seventh day is a Sabbath of complete rest, holy to the Lord; whoever does any work on the Sabbath day is to be put to death.

Exodus 35:2

Six days let work be done, but the seventh day is to be a holy day to you, a Sabbath of rest to the Lord; whoever does any work on that day is to be put to death.

Numbers 15:32-35

Now while the children of Israel were in the waste land, they saw a man who was getting sticks on the Sabbath day.

Isaiah 58:13

If you keep the Sabbath with care, not doing your business on my holy day; and if the Sabbath seems to you a delight, and the new moon of the Lord a thing to be honoured; and if you give respect to him by not doing your business, or going after your pleasure, or saying unholy words;

Matthew 15:2

Why do your disciples go against the teaching of the fathers? for they take food with unwashed hands.

Matthew 23:23-24

A curse is on you, scribes and Pharisees, false ones! for you make men give a tenth of all sorts of sweet-smelling plants, but you give no thought to the more important things of the law, righteousness, and mercy, and faith; but it is right for you to do these, and not to let the others be undone.

Mark 2:24

And the Pharisees said to him, Why are they doing what it is not right to do on the Sabbath?

Luke 5:33

And they said to him, The disciples of John frequently go without food, and make prayers, and so do the disciples of the Pharisees; but your disciples take food and drink.

Luke 6:7-9

And the scribes and Pharisees were watching him to see if he would make him well on the Sabbath, so that they might be able to say something against him.

John 5:9-11

And the man became well straight away, and took up his bed and went. Now that day was the Sabbath.

John 5:16

And for this reason the Jews were turned against Jesus, because he was doing these things on the Sabbath.

John 9:14-16

Now the day on which the earth was mixed by Jesus and the man's eyes were made open was the Sabbath.

Treasury of Scripture Knowledge

Summary

And certain of the Pharisees said unto them, Why do ye that which is not lawful to do on the sabbath days?

Bible References

Why

Luke 6:7
And the scribes and Pharisees were watching him to see if he would make him well on the Sabbath, so that they might be able to say something against him.
Luke 5:33
And they said to him, The disciples of John frequently go without food, and make prayers, and so do the disciples of the Pharisees; but your disciples take food and drink.
Matthew 12:2
But the Pharisees, when they saw it, said to him, See, your disciples do that which it is not right to do on the Sabbath.
Matthew 15:2
Why do your disciples go against the teaching of the fathers? for they take food with unwashed hands.
Matthew 23:23
A curse is on you, scribes and Pharisees, false ones! for you make men give a tenth of all sorts of sweet-smelling plants, but you give no thought to the more important things of the law, righteousness, and mercy, and faith; but it is right for you to do these, and not to let the others be undone.
Mark 2:24
And the Pharisees said to him, Why are they doing what it is not right to do on the Sabbath?
John 5:9
And the man became well straight away, and took up his bed and went. Now that day was the Sabbath.
John 9:14
Now the day on which the earth was mixed by Jesus and the man's eyes were made open was the Sabbath.

Not

Exodus 22:10
If a man puts an ass or an ox or a sheep or any beast into the keeping of his neighbour, and it comes to death or is damaged or is taken away, without any person seeing it:
Exodus 31:15
Six days may work be done, but the seventh day is a Sabbath of complete rest, holy to the Lord; whoever does any work on the Sabbath day is to be put to death.
Exodus 35:2
Six days let work be done, but the seventh day is to be a holy day to you, a Sabbath of rest to the Lord; whoever does any work on that day is to be put to death.
Numbers 15:32
Now while the children of Israel were in the waste land, they saw a man who was getting sticks on the Sabbath day.
Isaiah 58:13
If you keep the Sabbath with care, not doing your business on my holy day; and if the Sabbath seems to you a delight, and the new moon of the Lord a thing to be honoured; and if you give respect to him by not doing your business, or going after your pleasure, or saying unholy words;

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain