20 The seed falling on rocky ground refers to someone who hears the word and at once receives it with joy.

Read Matthew 13:20 Using Other Translations

But he that received the seed into stony places, the same is he that heareth the word, and anon with joy receiveth it;
As for what was sown on rocky ground, this is the one who hears the word and immediately receives it with joy,
The seed on the rocky soil represents those who hear the message and immediately receive it with joy.