The Greek noun batos (as a bush) refers to a thornbush, briar, or bramble. In the New Testament its most significant appearance is in Mark 12:26 and Luke 20:37, where Jesus references the 'passage about the bush' — the burning bush episode of Exodus 3 — as scriptural evidence for the resurrection of the dead.
The burning bush (batos) of Exodus 3 is one of the most theologically charged images in Scripture: a bush burning but not consumed, through which God revealed His eternal name 'I AM.' Jesus' use of this passage to argue for the resurrection is a masterclass in theological reasoning: God's self-identification as 'the God of Abraham, Isaac, and Jacob' (present tense, not past) implies their continuing existence.