Joel 3:13 uses the identical 'put in the sickle, harvest is ripe' imagery for divine judgment, directly echoing the harvest metaphor.

Matthew 13:30 expands the harvest metaphor with reapers separating tares and wheat — the same parable theme of final gathering.

Matthew 13:40-43 interprets the harvest as end-time judgment and the righteous shining, deepening the meaning of Mark's simple harvest.

Revelation 14:13-17 directly reuses the sickle and ripe harvest imagery for the final apocalyptic harvest of the earth.

Revelation 14:14 shows the Son of Man with a sharp sickle, preparing to reap — a clear visual parallel to the harvest in Mark.

Job 5:26 compares death to a sheaf gathered in its season, matching the harvest metaphor in Mark 4:29 where the sickle is put to ripe grain.