Midrash su II Re 17:33

... “May the Lord bless you from Zion…” (Psalms 128:5) This comes to teach that the Holy One blesses them from the place that He blesses Israel. And from where do we learn that the blessings come out from Zion? As it says “As the dew of Hermon which runs down on the mountains of Zion…” (Psalms 133:3) and it says “May the Lord bless you from Zion, and see the good of Jerusalem all the days of your life.” (Psalms 128:5) May you merit to see the good of Jerusalem in the time to come, “And may you see children to your children, peace upon Israel.” (Psalms 128:6)

"only to the L rd alone": Because others say: If the Israelites had not joined the name of the Holy One Blessed be He, with that of idolatry (i.e., the golden calf), they would have gone lost from the world, it is written "One who sacrifices to idolatry shall be put to death — only to the L rd alone!" R. Shimon b. Yochai says: Are not all who join the name of the Holy One Blessed be He to the name of idolatry liable to destruction! As it is written (II Kings 17:33) "They feared the L rd and served their (the nations') gods, according to the custom of the nations that exiled them from there." Others say: Torah was given with its signs (i.e., with its warnings), so that Israel not say: Though we are commanded against idolatry, it will not be held against us if we secrete the idols in the recesses of the earth. It is, therefore, written (Isaiah 2:14) "On all the high mountains and on all the lofty hills" (and in the recesses of the earth) — whether revealed or hidden, (idolatry is forbidden) — "only to the L rd alone" (with no admixtures of idolatry)!

And when the Israelites were exiled from Samaria to Babylon, the king sent his servants, and he caused them to dwell in Samaria, to raise tribute for (his) kingdom. What did the Holy One, blessed be He, do? He sent lions among them, || which killed some of them, as it is said, "And so it was, at the beginning of their dwelling there, that they feared not the Lord: therefore the Lord sent lions among them, which killed some of them" (2 Kings 17:25). They sent to the king, saying: Our lord, the king ! The land whither thou hast sent us will not receive us, for we are left but a few out of many. The king sent and called for all the elders of Israel, and said to them: All those years during which ye were in your land, the beasts of the field did not bereave you, and now it will not receive my servants. They gave him a word of advice, (thinking) perhaps he would restore them to their land. They said to him: Our lord, O king! That land does not receive a nation who do not study the Torah; behold, that land does not receive a nation who are not circumcised. The king said to them: Give me two of you, who shall go and circumcise them and teach them the book of the Torah; and there is no refusal to the word of the king. They sent Rabbi Dosethai of the Court-House, and Rabbi Micaiah, and they circumcised them, and they taught them the book of the Torah in the Noṭariḳon script, and they wept. Those nations followed the statutes of the Torah, and they served (also) their own gods.