A.T. Robertson Commentary Matthew 6:30

"But if God doth so clothe the grass of the field, which to-day is, and to-morrow is cast into the oven, [shall he] not much more [clothe] you, O ye of little faith?" — Matthew 6:30 (ASV)

The grass of the field (τον χορτον του αγρου). The common grass of the field. This heightens the comparison.