'Seventy seven' in the Bible

and all the days of Lamech were seven hundred and seventy-seven years, - and he died.

and caught a young man, of the men of Succoth, and enquired of him, - so he wrote down for him the princes of Succoth, and the elders thereof, seventy-seven men.

They who came in out of the captivity, Sons of the Exile, offered as ascending-sacrifices unto the God of Israel - bullocks twelve for all Israel, rams ninety-six, young sheep seventy-seven, he-goats for bearing sin, twelve, - the whole, as an ascending-sacrifice unto Yahweh.