Genesis 1:3 Then God said, "Let there be light"; and there was light.
Genesis 1:5 God called the light Day, and the darkness He called Night. So the evening and the morning were the first day.
Related Scriptures
2 Corinthians 4:6 For it is the God who commanded light to shine out of darkness, who has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ.
Romans 1:20 For since the creation of the world His invisible attributes are clearly seen, being understood by the things that are made, even His eternal power and Godhead, so that they are without excuse,