'Third Day' in the Bible

And be ready against the third day: for the third day the LORD will come down in the sight of all the people upon mount Sinai.

And he said unto the people, Be ready against the third day: come not at your wives.

And it came to pass on the third day in the morning, that there were thunders and lightnings, and a thick cloud upon the mount, and the voice of the trumpet exceeding loud; so that all the people that was in the camp trembled.