Luke 11:12

Or, if he asks [him] for an egg, will give him a scorpion [instead]? [Note: While at rest a scorpion rolls up in a ball that resembles an egg].

Luke 10:19

See, I have given you authority to trample on snakes and scorpions [i.e., to receive protection from accidental contact with venomous creatures. See Acts 28:5] and [to have authority] over all the power of the enemy [i.e., Satan. See verse 18]. And nothing at all will hurt you.

Revelation 9:10

And they had tails like scorpions with stingers, and in their tails they had the power to inflict harm upon people for five months.

Treasury of Scripture Knowledge

Summary

Or if he shall ask an egg, will he offer him a scorpion?

General references

Bible References

A scorpion

Luke 10:19
See, I have given you authority to trample on snakes and scorpions [i.e., to receive protection from accidental contact with venomous creatures. See Acts 28:5] and [to have authority] over all the power of the enemy [i.e., Satan. See verse 18]. And nothing at all will hurt you.
Revelation 9:10
And they had tails like scorpions with stingers, and in their tails they had the power to inflict harm upon people for five months.

General references

Matthew 7:9
Or, what person among you would give his son a stone if he asked you for a piece of bread?