Genesis 17:12

17:12 Throughout your generations every male among you who is eight days old must be circumcised, whether born in your house or bought with money from any foreigner who is not one of your descendants.

Genesis 17:1

The Sign of the Covenant

17:1 When Abram was 99 years old, the Lord appeared to him and said, “I am the sovereign God. Walk before me and be blameless.

Genesis 1:16

1:16 God made two great lights – the greater light to rule over the day and the lesser light to rule over the night. He made the stars also.