וְזָבַחְתָּ֥ שְׁלָמִ֖ים וְאָכַ֣לְתָּ שָּׁ֑ם וְשָׂ֣מַחְתָּ֔ לִפְנֵ֖י יְהוָ֥ה אֱלֹהֶֽיךָ׃
And thou shalt sacrifice peace-offerings, and shalt eat there; and thou shalt rejoice before the LORD thy God.
Read kabbalistic (mystical) interpretation of Deuteronomy 27:7: and classical mystical sources.