“Jehovah is waiting patiently to show you favor,
And he will rise up to show you mercy. […]”
~Isaiah 30:18

God’s people had sinned against him time after time, yet he trusted some of them would see the error of their way and return to him. (Is. 31:6,7)
To those who listened, God promised rich blessings.
“The cattle and the donkeys that work the ground will eat fodder seasoned with sorrel, which was winnowed with the shovel and the pitchfork.” (Is. 30:23,24)
Sorrel is a tangy luxury herb used in salads for human consumption.
Grains which are winnowed have been refined and are also for human consumption.
These verses are therefore making reference to the richness of God’s blessings that await anyone who wholeheartedly repents and changes for the better.
Currently we can enjoy a strong relationship with our heavenly father, and in the future, perfect health in a peaceful, just world. (Is. 32:15-18; 33:24)