Exodus 19:1; Exodus 19:11; Exodus 19:16; Exodus 28:19; Exodus 39:12

1 In the third month after the sons of Israel had gone out of the land of Egypt, on that very day they came into the wilderness of Sinai.
11 and let them be ready for the third day, for on the third day the LORD will come down on Mount Sinai in the sight of all the people.
16 So it came about on the third day, when it was morning, that there were thunder and lightning flashes and a thick cloud upon the mountain and a very loud trumpet sound, so that all the people who were in the camp trembled.
19 and the third row a jacinth, an agate and an amethyst;
12 and the third row, a jacinth, an agate, and an amethyst;