Contradiction with Matthew 13:8
Mark 4:5 describes seeds not having deep roots and withering, while Matthew 13:8 talks about seeds that fall on good ground and bring forth abundant fruit.
Matthew 13:8: But other fell into good ground, and brought forth fruit, some an hundredfold, some sixtyfold, some thirtyfold.
Contradiction with Luke 8:15
Mark 4:5 mentions seeds that are scorched and die, whereas Luke 8:15 describes seeds that fall on good ground, flourish, and yield a plentiful harvest.
Luke 8:15: But that on the good ground are they, which in an honest and good heart, having heard the word, keep [it], and bring forth fruit with patience.