Mark 4:18

These in the same way are those who are sown on the rocky places, who, when they have heard the word, immediately receive it with joy.

They have no root in themselves, but are short-lived. When oppression or persecution arises because of the word, immediately they stumble.

and the cares of this age, and the deceitfulness of riches, and the lusts of other things entering in choke the word, and it becomes unfruitful.

Those which were sown on the good ground are those who hear the word, and accept it, and bear fruit, some thirty times, some sixty times, and some one hundred times.