Mark 4:17

17 and have not root in themselves, but are temporary; afterward tribulation or persecution having come because of the word, immediately they are stumbled.

Mark 4:17 Meaning and Commentary

Mark 4:17

And have no root in themselves
The word has no root in their hearts, only in their natural affections: nor is the root of grace in them; there is no heart work, only speculative notions, and flashy affections:

and so endure but for a time:
they continue hearers and professors of the Gospel but for a small season; like the Jews, who rejoiced in the ministry of John the Baptist for a while, and then left him:

afterward, when affliction or persecution ariseth for the word's
sake, immediately they are offended.
As soon as any small degree of trouble comes upon them, and especially when there is a hot persecution of the professors of religion, because of the Gospel they have embraced; such hearers are stumbled at these things, and cannot bear the loss of any thing, or endure any thing severe for the sake of the word they have professed a pleasure in; and therefore, rather than suffer, they relinquish at once their profession of it.

Mark 4:17 In-Context

15 and these are they by the way where the word is sown: and whenever they may hear, immediately cometh the Adversary, and he taketh away the word that hath been sown in their hearts.
16 `And these are they, in like manner, who on the rocky ground are sown: who, whenever they may hear the word, immediately with joy do receive it,
17 and have not root in themselves, but are temporary; afterward tribulation or persecution having come because of the word, immediately they are stumbled.
18 `And these are they who toward the thorns are sown: these are they who are hearing the word,
19 and the anxieties of this age, and the deceitfulness of the riches, and the desires concerning the other things, entering in, choke the word, and it becometh unfruitful.
Young's Literal Translation is in the public domain.