Kabbalah su Deuteronomio 12:2

And I heard behind me (Ezek. 3:12) a herald calling. Will you not answer [that] I will prepare my generation, for you have not denied the words of the Master of the Earth, [who is] awesome in praise in the darkness, and light dwells with Him (Dan. 2:22). I will tell of the decree (Ps. 2:7), advice from afar. Indeed, these are the lambs of the Merciful One, the eternal God [who] is a dwelling-place (Deut. 33:27), Selah. Why should you ask, when it is miraculous? (Judg. 13:18). The Lord of Hosts has purposed, and who will disannul it? (Isa. 14:27). If I would relate and speak of them, they are more than can be told (Ps. 40:6), for it is to test (Exod. 20:20) us that He orders His angels (Ps. 91:11) for us in the high heavens above and on the earth below (Deut. 4:39). They sanctify and purify themselves (Isa. 66:17) to comprehend the rash and to give merit to the multitude concerning the things that are the mysteries of the world, to bring all hidden things to judgment (Eccles. 12:14), for thus it arose in [His] thought, and it is known to all that there is a time and a season for each thing (Eccles. 3:1), and snarl against all sound wisdom (Prov. 18:1), and [for] the enlightened one [who wishes] to do well, his silence suffices for him. Let him be [more] silent for the Lord than the roar of the lion [is loud]. He will place and desire, and his heart will understand that not all faces are alike, and [that] God has made high and uplifted (Isa. 57:15) lowly and dark, both essential and nonessential, [so] that they should fear Him (Eccles. 3:14). For the mem and the samekh on the [stone] tablets are still suspended and stand. They warn and testify as a sign and anger [that will] consume and destroy those who utilize the crown not for its own sake,³Cf. Mishnah, Avot 1:13. with a deadly poison for those who defy her will. A contemptible brand in the thought of him that is at ease (Job 12:5) under every leafy tree (Deut. 12:2).

And why all these precautions? — Because otherwise one might emit semen in vain, and Rabbi Yochanan stated: Whosoever emits semen in vain deserves death, since it says (Genesis 38:10) “What he did was unfavorable in the eyes of God and He killed him as well (referring to Onan).” Rabbi Yitzchak and Rabbi Ami said it’s as if he murders, since it says “enflaming yourselves with idols under every green tree, slaying (Shochtei) the children in the valleys under the clefts of the rocks?” (Isaiah 57:5), do not read Shochtei but rather Sochtei (squeeze out).” Rav Asi said: He is like an idol-worshipper; for here it is written, 'Under every green tree' and elsewhere it is written, ‘You shall utterly destroy from all the places where the nations, that you shall possess, worshipped their gods, upon the lofty mountains and upon the hills, and under every green tree.’