In Proverbs 15:15, the same contrast appears: a cheerful heart has a continual feast, reinforcing the connection between inner joy and outer well-being.

Proverbs 17:22 uses identical language — 'cheerful heart' and 'crushed spirit' — directly echoing the principle here about emotional health affecting physical state.

Proverbs 18:14 echoes 'crushed spirit' from here, noting that a crushed spirit is unbearable — deepening the understanding of its devastating effect.

Proverbs 12:25 shows anxiety weighing down the heart, while a kind word cheers it — illustrating the same dynamic of inner emotions affecting one's spirit.

In Proverbs 14:10, the heart's bitterness and joy are described as private—each heart knows its own, echoing the inner reality behind the cheerful face or crushed spirit.

Nehemiah 2:2 depicts a real-life example: Nehemiah's sad face reveals his inner heartache, demonstrating the principle that a heavy heart shows outwardly.

2 Corinthians 2:7 warns that excessive sorrow can overwhelm a person, matching the 'heartache crushes the spirit' here — both acknowledge sorrow's power.

2 Corinthians 7:10 distinguishes godly sorrow from worldly sorrow that leads to death — expanding on the 'heartache crushes spirit' by showing different outcomes of sorrow.

Psalm 13:2 expresses sorrow in the heart daily, illustrating the reality of heartache that crushes the spirit — a lament parallel to the Proverbs teaching.