NET

21 But he has no root in himself and does not endure; when trouble or persecution comes because of the word, immediately he falls away.

Darby

21 but has no root in himself, but is for a time only; and when tribulation or persecution happens on account of the word, he is immediately offended^D6763.

Darby Bible Notes

offended - Or 'stumbled,' as ver. 57.

KJV

21 “Yet hath he not root in himself, but dureth for a while: for when tribulation or persecution ariseth because of the word, by and by he is offended.”

Strong's

21 Yet ^G1161 hath he^G2192 not^G3756 root^G4491 in^G1722 himself^G1438, but^G235 dureth^G2076 for a while^G4340: for^G1161 when tribulation^G2347 or^G2228 persecution^G1375 ariseth^G1096 because^G1223 of the word^G3056, by and by^G2117 he is offended^G4624.