וַיִּקְרָ֨א יַעֲקֹ֜ב אֶת־שֵׁ֣ם הַמָּק֗וֹם אֲשֶׁר֩ דִּבֶּ֨ר אִתּ֥וֹ שָׁ֛ם אֱלֹהִ֖ים בֵּֽית־אֵֽל׃
And Jacob called the name of the place where God spoke with him, Beth-el.
Read kabbalistic (mystical) interpretation of Genesis 35:15: and classical mystical sources.