Exodus 29:42

תמיד A CONTINUAL [BURNT-OFFERING] i.e. from day to day: there shall not be an interval of a day between them (between two successive morning or afternoon offerings; cf. Rashi on Exodus 27:20). אשר אועד לכם WHERE I SHALL BE MET BY YOU — when I shall appoint a place of meeting to speak unto you I shall appoint it there (at the entrance of the tent of meeting) as the spot to which to come. Some of our Rabbis learn from this that it was from above the copper altar that the Holy One, blessed be He, spoke with Moses after the Tabernacle was erected, for this was at the entrance; but some say that He spoke from above the cover of the Ark (the כפרת), as it is said, (Exodus 25:22) “And I will speak to thee from above the cover”, and that the words “where I shall be met by you” which are said here are not used in reference to the altar which was at the entrance of the tent of meeting, but in reference to the tent of meeting itself which is mentioned in this verse (so that the meaning is: “at the entrance of the tent of meeting where, viz., in the tent of meeting, I shall be met by you”; cf. ברייתא דמלאכת המשכן at the end).

עֹלַ֤ת תָּמִיד֙ לְדֹרֹ֣תֵיכֶ֔ם פֶּ֥תַח אֹֽהֶל־מוֹעֵ֖ד לִפְנֵ֣י יְהֹוָ֑ה אֲשֶׁ֨ר אִוָּעֵ֤ד לָכֶם֙ שָׁ֔מָּה לְדַבֵּ֥ר אֵלֶ֖יךָ שָֽׁם׃

This shall be a continual burnt offering throughout your generations at the door of the Tent of Meeting before the Lord: where I will meet you, to speak there to thee.