Stony places - Where there was a thin surface of earth, and a rock at the bottom.

when.

Matthew 13:21 Yet has he not root in himself, but endures for a while: for when tribulation or persecution rises because of the word...

Isaiah 49:10 They shall not hunger nor thirst; neither shall the heat nor sun smite them: for he that has mercy on them shall lead them...

James 1:11,12 For the sun is no sooner risen with a burning heat, but it wither the grass, and the flower thereof falls...

Revelation 7:16 They shall hunger no more, neither thirst any more; neither shall the sun light on them, nor any heat.

because.

Matthew 7:26,27 And every one that hears these sayings of mine, and does them not, shall be likened to a foolish man...

Luke 8:13 They on the rock are they, which, when they hear, receive the word with joy; and these have no root, which for a while believe...

Ephesians 3:17 That Christ may dwell in your hearts by faith; that you, being rooted and grounded in love,

Colossians 1:23 If you continue in the faith grounded and settled, and be not moved away from the hope of the gospel, which you have heard...

Colossians 2:7 Rooted and built up in him, and established in the faith, as you have been taught, abounding therein with thanksgiving.

Ears and no Ears
'Who hath ears to hear, let him hear.--MATT. xiii. 8. This saying was frequently on our Lord's lips, and that in very various connections. He sometimes, as in the instance before us, appended it to teaching which, from its parabolic form, required attention to disentangle the spiritual truth implied. He sometimes used it to commend some strange, new revolutionary teaching to men's investigation--as, for instance, after that great declaration of the nullity of ceremonial worship, how that nothing …
Alexander Maclaren—Expositions of Holy Scripture

The Parable of the Tares, by Bishop Latimer, Preached on the 7Th of February, 1553.
MATTHEW XIII.--The kingdom of heaven is likened unto a man which sowed good seed in his field: but while men slept, his enemy came and sowed tares among the wheat, and went his way, &c. This is a parable or similitude wherein our Saviour compared the kingdom of God, that is, the preaching of his word, wherein consisteth the salvation of mankind, unto a husbandman who sowed good seed in his field. But before we come unto the matter, you shall first learn to understand what this word parable, which …
John Knox—The Pulpit Of The Reformation, Nos. 1, 2 and 3.

A Man Reaps More than He Sows.
A MAN REAPS MORE THAN HE SOWS. "But other fell into good ground, and brought forth fruit, some a hundredfold, some sixtyfold, some thirtyfold."--Matt. xiii: 8. If I sow a bushel, I expect to reap ten or twenty bushels. I can sow in one day what will take ten men to reap. The Spaniards have this proverb: "Sow a thought and reap an act. Sow an act, and reap a habit. Sow a habit, and reap a character. Sow a character and reap a destiny." And it takes a longer time to reap than to sow. I have heard …
Dwight L. Moody—Sowing and Reaping