2 Kings 20:10
And Hezekiah answered, It is a light thing for the shadow to go down ten degrees: nay, but let the shadow return backward ten degrees.
Cross-reference
2 Kings 3:18
Allusion
In 2 Kings 3:18, Elisha uses the same phrase 'light thing' to describe God's ease in delivering victory, mirroring Hezekiah's words here.
Joshua 10:14
Parallel
In Joshua 10:14, the sun stands still—a similar miracle of God reversing the sun's motion, making this a strong parallel.
Isaiah 49:6
Allusion
In Isaiah 49:6, God says 'It is a light thing' regarding the servant's mission, echoing Hezekiah's remark about the shadow.