en_tn/jer/12/13.md

They have sown wheat but harvest thornbushes

"They have sown wheat, but there is nothing to harvest but thornbushes"

They have

"My people have"

thornbushes

a large plant that is covered in sharp points

exhausted

unable to do more, without any more strength

So be ashamed of your gain because of Yahweh's anger

"So be ashamed of your tiny harvest because Yahweh is angry with you." Here the word "gain" does not mean a large amount of something, but refers to a small amount.