He maketh peace in thy borders - Margin, he maketh thy border peace. The word border here refers to a boundary, and stands for all the domain or territory included within the boundaries of a country. The idea is that peace prevailed throughout the land.
And filleth thee with the finest of the wheat - Margin, as in Hebrew, fat of wheat. Literally, “He satisfies thee with the fat of wheat.” There is no want of wheat, and that of the best kind. Compare the notes at Psalms 132:15 : “I will satisfy her poor with bread.”