Say ye to the righteous - The meaning of this verse and the following is sufficiently plain, though expositors have given some variety of interpretation. They declare a great principle of the divine administration similar to what is stated in Isaiah 1:19-20. Lowth reads it, ‘Pronounce ye a blessing on the just; verily good (shall be to him).’
That it shall be well ... - The word rendered ‘well,’ means ‘good.’ The sense evidently is, that in the divine administration it shall be well to be righteous. The Septuagint has rendered this in a remarkable manner, connecting it with the previous verse: ‘Wo unto their soul, for they take evil counsel among themselves, saying, ‘Let us bind the righteous, for he is troublesome unto us:’ therefore, they shall eat the fruit of their doings.’
They shall eat ... - That is, they shall receive the appropriate “reward” of their works, and that reward shall be happiness. As a farmer who sows his field and cultivates his farm, eats the fruit of his labor, so shall it be with the righteous. A similar expression is found in Proverbs 1:31 :
Therefore shall they eat of the fruit of their own way,
And be filled with their own devices.
Also Jeremiah 6:19 : ‘I will bring evil upon this people, even the fruit of their thought;’ compare Galatians 6:8.