וַיֵּרָ֤א יְהוָה֙ אֶל־אַבְרָ֔ם וַיֹּ֕אמֶר לְזַ֨רְעֲךָ֔ אֶתֵּ֖ן אֶת־הָאָ֣רֶץ הַזֹּ֑את וַיִּ֤בֶן שָׁם֙ מִזְבֵּ֔חַ לַיהוָ֖ה הַנִּרְאֶ֥ה אֵלָֽיו׃
And the LORD appeared unto Abram, and said: ‘Unto thy seed will I give this land’; and he builded there an altar unto the LORD, who appeared unto him.
Read kabbalistic (mystical) interpretation of Genesis 12:7: and classical mystical sources.