'Third Day' in the Bible

and let them be ready for the third day; for on the third day Jehovah will come down before the eyes of all the people on mount Sinai.

And he said to the people, Be ready for the third day; do not come near your wives.

And it came to pass on the third day, when it was morning, that there were thunders and lightnings and a heavy cloud on the mountain, and the sound of the trumpet exceeding loud; and the whole people that was in the camp trembled.