Midrash su Salmi 40:11

Israel spake before the Holy One, blessed be He: Sovereign of the worlds! Thou didst complete the heavens and the earth with reference to being made, created, and called into existence; let not Thy mercy and loving-kindness be withheld, for if Thou withholdest Thy mercy and loving-kindness we are unable to exist, because the world rests upon Thy mercy and loving-kindness, as it is said, "For the mountains shall depart, and the hills be removed; but my kindness shall not depart from thee… saith the Lord that hath mercy on thee" (Isa. 54:10); and it says (elsewhere), "Remember, O Lord, thy tender mercies and thy loving-kindnesses; for they have been ever of old" (Ps. 25:6).