Enos: man the son of Seth, and grandson of Adam (Genesis 5:6-11; Luke 3:38). He lived nine hundred and five years. In his time "men began to call upon the name of the Lord" (Genesis 4:26), meaning either
then began men to call themselves by the name of the Lord (marg.) i.e., to distinguish themselves thereby from idolaters; or
then men in some public and earnest way began to call upon the Lord, indicating a time of spiritual revival.
