וְזָבַ֥חְתָּ פֶּ֛סַח לַיהוָ֥ה אֱלֹהֶ֖יךָ צֹ֣אן וּבָקָ֑ר בַּמָּקוֹם֙ אֲשֶׁר־יִבְחַ֣ר יְהוָ֔ה לְשַׁכֵּ֥ן שְׁמ֖וֹ שָֽׁם׃
And thou shalt sacrifice the passover-offering unto the LORD thy God, of the flock and the herd, in the place which the LORD shall choose to cause His name to dwell there.
Read kabbalistic (mystical) interpretation of Deuteronomy 16:2: and classical mystical sources.