Reproof for the non-payment of tithes and offerings, which is the cause of their national calamities, and promise of prosperity on their paying them.
from ... days of your fathers - Ye live as your fathers did when they brought on themselves the Babylonian captivity, and ye wish to follow in their steps. This shows that nothing but God’s unchanging long-suffering had prevented their being long ago “consumed” (Mal 3:6).
Return unto me - in penitence.
I will return unto you - in blessings.
Wherein, etc. - (Mal 3:16). The same insensibility to their guilt continues: they speak in the tone of injured innocence, as if God calumniated them.