Rabbi Ammi bar Abba employed gematria to interpret the meaning of Abram's name change in from Abram () to Abraham (). According to Rabbi Ammi bar Abba, at first God gave Abram mastery over 243 of his body parts, as the numerical value of the Hebrew letters in Abram is 243. Then God gave Abraham mastery over 248 of his body parts, adding five body parts, as the numerical value of the Hebrew letter "hei" () that God added to his name is five. The Gemara explained that as a reward for Abraham's undergoing circumcision, God granted Abraham control over his two eyes, his two ears, and the organ that he circumcised.