'Six' in the Bible

Noah {was six hundred years old} when the flood waters came upon the earth.

In the six hundredth year of the life of Noah, in the second month, on the seventeenth day of the month--on that day all the springs of the great deep were split open, and the windows of heaven were opened.

And it happened that, in the six hundred and first year, in the first [month], on the first [day] of the month, the waters dried up from upon the earth. And Noah removed the covering of the ark and looked. And behold, the face of the ground was dried up.

And Leah said, "God has endowed me with a good gift. This time my husband will acknowledge me, because I bore him six sons." And she called his name Zebulun.

These twenty years [I have been] in your house. I served you fourteen years for your two daughters and six years for your flock, and you have changed my wages ten times.