Charles Ellicott Commentary 2 Kings 25:30

"and for his allowance, there was a continual allowance given him of the king, every day a portion, all the days of his life." — 2 Kings 25:30 (ASV)

His allowance. — For the maintenance of his little court. Literally, And (as for) his allowance, a continual allowance was given him from the king, a day’s portion in its day.

All the days of his (Jehoiachin’s) life. — He may have died before Evil-merodach was murdered. There would be nothing strange in this, considering his age and his thirty-seven years of imprisonment.

The writer evidently dwells with pleasure on this faint gleam of light amid the darkness of the exile. It was a kind of foreshadowing of the pity which afterwards was to be extended to the captive people, when the divine purpose had been achieved, and the exile had done its work of chastisement and purification. (Ezra 9:9; Nehemiah 2:2.)