'Assaying' in the Bible

And I will bring that surviving third through, testing them as if through fire, purifying them like silver, assaying them like gold. They will call on my name, and I will answer them. I will say, "This is my people,' and they will say, "The LORD is my God.'"

By faith they passed through the Red sea as by dry land: which the Egyptians assaying to do were drowned.