Isaac

Isaac is a Hebrew name derived from the root tzchaq, meaning to laugh or to rejoice. It originates in the Old Testament as the name of the son of Abraham and Sarah, whose birth in their old age prompted Sarah's laughter of disbelief and delight as recounted in Genesis. The name passed into Greek as Isaak and Latin as Isaac, spreading widely through Jewish, Christian, and Islamic traditions, where the patriarch is also honored under the Arabic form Ishaq. Variant forms include Isaak, Isak, and Ike.