Those on the rock are the ones who welcome the word with joy when they hear it, but they have no root; they believe for a while, and in the hour of testing they fall away.
In context
11This is what the parable means. The seed is the word of God. 12Those along the path are the ones who hear; then the devil comes and carries the word away from their hearts, so that they may not believe and be saved. 13Those on the rock are the ones who welcome the word with joy when they hear it, but they have no root; they believe for a while, and in the hour of testing they fall away. 14What fell among the thorns stands for those who hear and then go on their way, and are smothered by the worries and wealth and pleasures of this life, and never ripen. 15But what fell in the good soil stands for those who hear the word with a fine and generous heart, hold on to it, and bear fruit through endurance.
