To temper metals they must be subjected to great heat and cooled slowly, otherwise they would become brittle and easily broken. Paul had been well tempered in the furnace of trial when able to say, "I have learned in whatsoever state I am, therewith to be content" (Php_4:11). Those easily discouraged have not been well tempered. "It was good for me that I was afflicted" (Psa_119:71).