Luke 11:12

Or, if he asks for an egg, will give him a scorpion?

Luke 10:19

Remember, I have given you the power to 'trample upon serpents and scorpions,' and to meet all the strength of the Enemy. Nothing shall ever harm you in any way.

Revelation 9:10

They have tails like scorpions, and stings, and in their tails lies their power to harm men 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
Remember, I have given you the power to 'trample upon serpents and scorpions,' and to meet all the strength of the Enemy. Nothing shall ever harm you in any way.
Revelation 9:10
They have tails like scorpions, and stings, and in their tails lies their power to harm men for five months.

General references

Matthew 7:9
Who among you, when his son asks him for a loaf, will give him a stone,