5 Some fell upon rocky ground, where they did not have much soil, and they sprang up at once, because the soil was not deep;
Mark 4:5 Cross References - Williams
Matthew 13:5-6
Matthew 13:20
20 And what was sown upon the thin rocky soil illustrates the man who hears the message and bubbling over with joy at once accepts it,
Mark 4:16-17
Luke 8:6
6 Another portion of them fell upon the rock, and as soon as they sprang up, they withered, because they had no moisture.
Luke 8:13
13 The portion of them on the rock illustrates those who accept the message, bubbling over with joy when they first hear it, but it takes no real root. They believe for awhile, but in the time of testing they fall away.