Midrash sobre Números 22:25

This heap is witness between me and thee (Gen. 31:48). Scripture states elsewhere in reference to this verse: And crushed Balaam’s foot against the wall (Num. 22:25). The heap alluded to in our text was the very wall at which Balaam violated the promise he had made to Jacob, as it is said: I will not pass over this heap to harm you (Gen. 31:52). Balaam and Laban were one and the same,¹³Sanhedrin 105a. See Ginzberg, Legends of the Jews 6:123. for it is said of him: An Aramean was destroying my father (Deut. 26:5). Balaam was called an Aramean, because he desired to annihilate Israel, as is said: Come, execrate Israel (Num. 23:7). Hence, it was the very wall that had borne witness to the oath that he had made that called him to account, as is written: The hand of the witness shall be first upon him (Deut. 17:7). And Jacob swore by the Fear of his father, Isaac (Gen. 31:53). This righteous man did not swear by the name of the king, but rather on the life of his father. He did it just as a man who desires to prove the truth of this remarks says: “I swear by the life of my father.” He swore this oath only out of respect, as is written: A son shall honor his father (Mal. 1:6).

... [T]he Holy One has pity on the honor of the creatures/b’riyot (here meaning “people”) and knows their needs. And He shut the mouth of the beast/b’heimah, for if she would speak, they could not make her serve or stand up to her /bah, for [there was] this silent one from the animals (the ass) and this wise one from the sages (Bil`am) – [and] when she spoke he could not stand up to her.

Rabbi 'Aḳiba said: The executioners of Pharaoh used to strangle the Israelites in the walls of the houses, || and the Holy One, blessed be He, heard their cry, as it is said, "And God heard their groaning, and God remembered his covenant with Abraham, with Isaac, and with Jacob" (Ex. 2:24). Further, they burnt their children in the furnace of fire, as it is said, "But the Lord hath taken you, and brought you forth out of the iron furnace, out of Egypt" (Deut. 4:20).