Contradiction with Psalm 127:1
Highlights that safety and protection ultimately come from the Lord, which may seem at odds with human-imposed safety measures like the one in Deuteronomy 22:8.
Psalm 127:1: [A Song of degrees for Solomon.] Except the LORD build the house, they labour in vain that build it: except the LORD keep the city, the watchman waketh [but] in vain. [for...: or, of Solomon] [that...: Heb. that are builders of it in it]