'Three Days' in the Bible

Nevertheless yet they lay upon him, till he was ashamed, and said, "Send." And they sent fifty men which sought him three days and three nights, but found him not.

"Turn again, and tell Hezekiah the captain of my people: 'Thus sayeth the LORD God of David thy father. I have heard thy prayer and seen thy tears. Behold, I will heal thee, and this day three days thou shalt go up into the house of the LORD.