Jeremiah 13:23

Is it possible for the skin of the Ethiopian to be changed, or the markings on the leopard? Then it might be possible for you to do good, who have been trained to do evil.

Proverbs 27:22

Even if a foolish man is crushed with a hammer in a vessel among crushed grain, still his foolish ways will not go from him.

Isaiah 1:5

Why will you have more and more punishment? why keep on in your evil ways? Every head is tired and every heart is feeble.

Jeremiah 2:22

For even if you are washed with soda and take much soap, still your evil-doing is marked before me, says the Lord God.

Jeremiah 9:5

Everyone will make sport of his neighbour with deceit, not saying what is true: their tongues have been trained to say false words; they are twisted, hating to come back.

Matthew 19:24-28

And again I say to you, It is simpler for a camel to go through a needle's eye, than for a man with much money to go into the kingdom of God.

Jeremiah 2:30

I gave your children blows to no purpose; they got no good from training: your sword has been the destruction of your prophets, like a death-giving lion.

Jeremiah 5:3

O Lord, do not your eyes see good faith? you have given them punishment, but they were not troubled; you have sent destruction on them, but they did not take your teaching to heart: they have made their faces harder than a rock; they would not come back.

Jeremiah 6:29-30

The blower is blowing strongly, the lead is burned away in the fire: they go on heating the metal to no purpose, for the evil-doers are not taken away.

Jeremiah 17:9

The heart is a twisted thing, not to be searched out by man: who is able to have knowledge of it?

Treasury of Scripture Knowledge

Summary

Can the Ethiopian change his skin, or the leopard his spots? then may ye also do good, that are accustomed to do evil.

Accustomed

General references

Bible References

Accustomed

Jeremiah 9:5
Everyone will make sport of his neighbour with deceit, not saying what is true: their tongues have been trained to say false words; they are twisted, hating to come back.

General references

Mark 10:25
It is simpler for a camel to go through a needle's eye, than for a man of wealth to come into the kingdom of God.

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