So we can finally start calling Abram as Abraham, as in this chapter, God renames Abram (exalted father) to Abraham (father of many). Seems like a cruel joke to rename a guy who is about to turn 100 and whose wife is on the verge of turning 90. But when God renames someone, it is far from a joke, but rather an assurance of the fulfillment of the promise he had made to Abram almost a quarter of a century ago.