Genesis 4:25-26

25Adam knew [Eve as] his wife again; and she gave birth to a son, and named him Seth, for [she said], “God has granted another child for me in place of Abel, because Cain killed him.”

26To Seth, also, a son was born, whom he named Enosh (mortal man, mankind). At that [same] time men began to call on the name of the Lord [in worship through prayer, praise, and thanksgiving].