Ialulep is the supreme deity of Ulithi and, under the cognate name Aluelap, the great god at the head of the sky-god lineage across the Chuukic outer islands. He is pictured as a benevolent, enormous, and very old man enthroned in the uppermost heaven. His central prerogative is the apportionment of human life: each person's span is figured as a measured cord, and death comes when the measure runs out. From him descend the sky god Lugeilang and, in the Chuukic creation cycle, the creatrix Ligoapup. Sources differ on whether the supreme god of the sky is to be identified with, or held distinct from, the navigation god whose names resemble his.