Charles Ellicott Commentary Psalms 74:16-18

"The day is thine, the night also is thine: Thou hast prepared the light and the sun. Thou hast set all the borders of the earth: Thou hast made summer and winter. Remember this, that the enemy hath reproached, O Jehovah, And that a foolish people hath blasphemed thy name." — Psalms 74:16-18 (ASV)

An appeal from the God of history to the God of nature. Not only did He work wonders, but even the universe is the work of His hand.