וְזֶ֕ה אֲשֶׁ֥ר תַּעֲשֶׂ֖ה עַל־הַמִּזְבֵּ֑חַ כְּבָשִׂ֧ים בְּנֵֽי־שָׁנָ֛ה שְׁנַ֥יִם לַיּ֖וֹם תָּמִֽיד׃
Now this is that which thou shalt offer upon the altar: two lambs of the first year day by day continually.
Read kabbalistic (mystical) interpretation of Exodus 29:38: and classical mystical sources.