Yes, the Bible mentions several miraculous events involving the sun. In the book of Joshua, Joshua prayed for the sun and moon to stand still so that the Israelites could defeat their enemies (Joshua 10:12-13). In the book of Isaiah, God caused the shadow on a sundial to go back ten steps as a sign to Hezekiah (Isaiah 38:8). In the New Testament, at the crucifixion of Jesus, the sun was darkened for three hours (Luke 23:44-45).