John Wesley on 2 Kings 2:11

A chariot of fire - In this form the angels appeared. The souls of all the faithful, are carried by an invisible guard of angels, into the bosom of Abraham. But Elijah being to carry his body with him, this heavenly guard appeared visibly: Not in an human shape, tho' so they might have borne him in their arms, but in the form of a chariot and horses, that he may ride in state, may ride in triumph, like a prince, like a conqueror. See the readiness of the angels to do the will of God, even in the meanest services for the heirs of salvation! Thus he who had burned with holy zeal for God and his honour, was now conveyed in fire into his immediate presence.