Midrash sa Exodo 22:30: Midrash Tanchuma, Mekhilta DeRabbi Yishmael, Ein Yaakov (Glick Edition) & Vayikra Rabbah

Then washed I thee with water indicates that you must make a laver²To be placed in the Temple courtyard for the use of the priests. for Me. I anointed thee with oil corresponds to the anointing oil (that must be available).³For anointing the High Priest. I clothed thee also with richly woven work corresponds to the embroidered garments (worn in the Temple). And shod thee with sealskin (tahash) corresponds to the tehashim that were used (for the cover of the Holy of Holies). And I wound fine linen about thy head corresponds to the twisted linen (of the priests’ garments). And covered thee with silk corresponds to the clouds of glory, as it is said: The pillar of cloud departed not from before the people (Exod. 13:22), and that corresponds to the curtains of goats’ hair. I decked thee also with ornaments alludes to the purple cloak, and that corresponds to the ark and its overlay. And I put a ring upon thy nose corresponds to the nose rings and earrings that (the women brought to donate for the gold of the Tabernacle and priestly garments). A beautiful crown upon thy head corresponds to the ark cover and the gold rim around the table. Behold, I will cause to rain bread (Exod. 16:4) corresponds to the show-bread. And the Lord went before them by day (ibid. 13:21) corresponds to His injunction that the Israelites shall burn a lamp continually.

(Exodus 22:30) "And men of holiness shall you be to me": R. Yishmael says: When you are holy, you are Mine. Issi b. Yehudah says: When the Holy One Blessed be He originates a mitzvah for Israel, He adds holiness to them. Issi b. Guriah says: It is written here (Devarim 14:21) "holy" ("for a holy people are you … You shall not cook a kid in its mother's milk"), and, elsewhere (Exodus, Ibid.) "holiness." Just as here ("a kid, etc.") the prohibition is eating, so, there, ("treifah") the prohibition is eating.

(Fol. 23) R. Shesheth said in the name of R. Elazar b. Azaria: "Whence do we know that the strap [with which lashes are given] must be of calf skin? From the following passage (Deut. 25, 3) Forty stripes he may give him, he shall not exceed, and immediately after, it reads, Thou shalt not muzzle the ox." R. Shesheth, in the name of R. Elazar b. Azaria, said again: "Whoever disregards the festive weeks [treating them as ordinary days], is considered as if he served idols; for the verse reads (Ex. 34, 17) Thou shalt make thee no molten God, and immediately follows the passage, The feast of unleavened bread shalt thou keep." R. Shesheth, in the name of R. Elazar b. Azaria, said again: "Whoever speaks gossip, or listens to gossip, and whoever testifies as a false witness deserves to be thrown before dogs, for the passage reads (Ib. 22, 30) To the dogs shalt ye cast it, and immediately follows, Thou shalt not receive a false report; put not thy hand with the wicked to be an unrighteous witness. Read it Tashi," (to bear or receive false reports).