Luke 5:5

ἐπιστάτα : Lk.'s name for Jesus as Master, six times; a Greek term for Gentile readers instead of Rabbi = (1) Master, then (2) Teacher, “qui enim magistri doctrinae erant, ii magistri simul vitae esse solebant,” Kypke. ἐπὶ τῷ ῥήματί σου, at Thy word or bidding. Success was doubly improbable: it was day, and in deep water; fish were got at night, and near shore. The order, contrary to probability, tempts to symbolic interpretation: the deep sea the Gentile world; Peter's indirect objection symbol of his reluctance to enter on the Gentile mission, overcome by a special revelation (Acts 10). So Holtz., H. C.