וַיִּקְרָ֧א יַעֲקֹ֛ב שֵׁ֥ם הַמָּק֖וֹם פְּנִיאֵ֑ל כִּֽי־רָאִ֤יתִי אֱלֹהִים֙ פָּנִ֣ים אֶל־פָּנִ֔ים וַתִּנָּצֵ֖ל נַפְשִֽׁי׃
And Jacob called the name of the place Peniel: ‘for I have seen God face to face, and my life is preserved.’
Read halakhic rulings (Jewish law) on Genesis 32:31: and classical halakhic sources.