Ambrose of Milan
The instruction from both the New and Old Testaments ought to be harmonized, as it is stated, Eat the old of the old, and take away the old from the face of the new (Lev. 26:10).
You shall eat the oldest of the old store: and, new coming on, you shall cast away the old.
וַאֲכַלְתֶּ֥ם יָשָׁ֖ן נוֹשָׁ֑ן וְיָשָׁ֕ן מִפְּנֵ֥י חָדָ֖שׁ תּוֹצִֽיאוּ׃
3 Church Fathers comment on this verse
The instruction from both the New and Old Testaments ought to be harmonized, as it is stated, Eat the old of the old, and take away the old from the face of the new (Lev. 26:10).
We have absorbed the ancient wisdom of the Old Testament, which was initially bestowed upon humanity, and we cherish it deeply in our hearts. We are called to love the Lord our God with all our heart, soul, and strength, and to love our neighbor as ourselves, as stated in Scripture (cf. Deut. 6:5; Lev. 19:18; Mk. 12:30-31). In doing so, we embrace the new and greater covenant, moving beyond the literal observance of the Mosaic Law while embodying its principles with grace. Our hearts have been transformed through the Holy Spirit, filling us with hope for the Kingdom of Heaven. As the Apostle writes: Therefore if anyone is in Christ, he is a new creation; old things have passed away; behold, all things have become new (2 Cor. 5:17). In Revelation, it is proclaimed: And He who sat on the throne said, ‘Behold, I make all things new’ (Rev. 21:5).
The abundance of harvests will be so great that you will bring forth not only the remnants of the previous year's yield but also the oldest stores collected from many years gone by. Yet, even as you gather these, you will find yourselves unable to consume them due to a lack of space; their surplus will compel you to leave them unused. As you favor the new, bountiful harvest, the older provisions will need to be discarded to make room for the fresh bread being gathered.
Passages read together with this verse.