זְכֹר־רַחֲמֶ֣יךָ יְ֭הוָה וַחֲסָדֶ֑יךָ כִּ֖י מֵעוֹלָ֣ם הֵֽמָּה׃
Remember, O LORD, Thy compassions and Thy mercies; For they have been from of old.
Rashi on Psalms
for they have been since time immemorial Since the days of Adam, to whom You said, (Gen. 2: 17), “for on the day that you eat from it you must die,” but You gave him Your day, which is a thousand years.