Now they began on the first day of the first month to sanctify, and on the eighth day of the month they came to the LORD’s porch. They sanctified the LORD’s house in eight days, and on the sixteenth day of the first month they finished.
Genesis 1:5
God called the light “day”, and the darkness he called “night”. There was evening and there was morning, the first day.
Genesis 2:11
The name of the first is Pishon: it flows through the whole land of Havilah, where there is gold;
Genesis 4:4
Abel also brought some of the firstborn of his flock and of its fat. The LORD respected Abel and his offering,
Genesis 4:19
Lamech took two wives: the name of the first one was Adah, and the name of the second one was Zillah.
Genesis 4:26
A son was also born to Seth, and he named him Enosh. At that time men began to call on the LORD’s name.