My belly, i.e. my mind or heart, which is oft called a man's belly, as Job 15:35 Psalms 40:8 Habakkuk 3:16 1 Thessalonians 7:38. As wine; as new wine pent up close in a bottle, as the following words explain it and determine it. The wine is here put for the bottle in which it is, by a common metonymy. New bottles, i.e. bottles of new wine, by the same general figure; for otherwise old bottles are most apt to burst, Matthew 9:17.
Related Commentaries of Job 32:19
Job 32:19
19 Behold, my belly is as wine which hath no vent; it is ready to burst like new bottles.