'Seventy' in the Bible

Jesus said to him, "I do not say to you up to seven times, but up to seventy times seven!

And he summoned two of the centurions [and] said, "Make ready from the third hour of the night two hundred soldiers and seventy horsemen and two hundred spearmen, in order that they may proceed as far as Caesarea.

(Now we were [in] all two hundred seventy six persons on the ship.)