Genesis 4:26
24 If Cain is to be avenged seven times as much, then Lamech seventy-seven times!” 25 And Adam was intimate with his wife again, and she gave birth to a son. She named him Seth, saying, “God has given me another child in place of Abel because Cain killed him.” 26 And a son was also born to Seth, whom he named Enosh. At that time people began to worship the Lord.
LXX Genesis 4:26
24 because seven times vengeance has been exacted by Kain, but by Lamech seventy times seven.” 25 Now Adam knew his wife Heua, and after she had conceived she bore a son and named his name Seth, saying, “For God has raised up for me another offspring instead of Habel, whom Kain killed.” 26 And to Seth a son was born, and he named his name Enos. He hoped to invoke the name of the Lord God.
Notes and References
"... The last clause refers to Enos ... Once the timer 'then' was misread (by dittography?) the verb 'was begun' had to be read in an active sense. By vocalizing it the verb means "hoped," hence 'he hoped to invoke the name of the Lord God.' In the Masoretic text the infinitive 'to invoke' the name of Yahweh is the subject, i.e. 'Then invoking the name Yahweh was begun.' It should also be noted that the use of the double name negates the Hebrew notion that invoking the name Yahweh began with Enos. That Enos 'hoped' to invoke the name might well mean that he did not actually succeed in doing so ... Harl makes the interesting suggestion that this might resolve the inherent contradiction between Exodus 3:14 and 6:3. This may well have motivated the translator ..."
Wevers, John William Notes on the Greek Text of Genesis (pp. 66-67) Scholars Press, 1993