'Six' in the Bible

In the six hundredth year of Noah's life, in the second month, on the seventeenth day of the month -- on that day all the fountains of the great deep burst open and the floodgates of the heavens were opened.

In Noah's six hundred and first year, in the first day of the first month, the waters had dried up from the earth, and Noah removed the covering from the ark and saw that the surface of the ground was dry.

Then Leah said, "God has given me a good gift. Now my husband will honor me because I have given him six sons." So she named him Zebulun.

This was my lot for twenty years in your house: I worked like a slave for you -- fourteen years for your two daughters and six years for your flocks, but you changed my wages ten times!