2 Samuel 22:10

He bowed the heavens also, and came down; and darkness was under his feet.

This line belongs to a song David composed while Saul was pursuing him to take his life. The song recounts his dangers and his deliverances. In it he gives praise and glory to God as his merciful preserver. The bowing of the heavens and coming down with darkness under His feet is a poetic picture of God's powerful intervention to hear David's cry and deliver him from danger.