John Wesley on Genesis 17:5

In token of this, his name was changed from Abram, a high father, to Abraham, the father of a multitude. This was to confirm the faith of Abraham, while he was childless; perhaps even his own name was sometimes an occasion of grief to him; Why should he be called a high father, who was not a father at all? But now God had promised him a numerous issue, and had given him a name which signified so much; that name was his joy.