Psalms 40:2

He brought me up also out of an horrible pit, out of the miry clay, and set my feet upon a rock, and established my goings.

He brought me up also out of an horrible pit - literally, 'from a deep of roaring.' The Hebrew х mibowr (H953) shaa'own (H7588), from a root, shaa'ah (H7582), to roar like waves] is the same as in Isaiah 17:12, "like the rushing of mighty waters." As water does not 'roar' in a "pit," we must understand, not a cistern, but a vast deep cavity, into which roaring waters rush. The "pit" is used of Sheol or Hades, Psalms 28:1; cf. the parallel, Psalms 69:2; Psalms 18:4; Psalms 18:16. What shows that not a cistern pit, but a deep of roaring waters, is meant, is that "a rock" stands in suitable contrast to the latter, but would not do so to the former. Wasteness, misery, want, and howling sounds are all suggested by the Hebrew word (cf. Deuteronomy 32:10). Messiah, in His sufferings for us, had to bear the thunders of the divine justice against our sins, the horror of the maledictory sentence of the law, the mockings of men, and the howlings of insulting demons.

Out of the miry clay - the mud at the bottom of the deep roaring waters (Psalms 69:2). So Jeremiah, the type, "sunk in the mire" at the bottom of the dungeon of Malchiah, until he was drawn up and taken out by Ebed-melech.

And set my feet upon a rock, and established my goings. "A rock" is the image of security (Psalms 18:2; Psalms 18:33). Christ is our Rock, as the Father was His rock in the days of His flesh.