Gen 32:29

32:29 Why is it that you ask. In ancient times, a name was thought to express essential nature as well as identity. The divine name partakes of the sacredness of God’s being (Judg. 13:18), and was to be reverenced (Ex. 20:7). The pagans believed that knowing the name of a god imparted ability to invoke that deity’s power. Here, however, the divine name is withheld (cf. 28:13; Hos. 12:5), showing that the Lord’s revelation of His name is a gracious act of divine initiative, not a response to human effort to invoke and control God.