old/ aged/ advanced in years
A person who is very mature. Old.
("And Abraham and Sarah were old, advanced in years; it had ceased to be with Sarah after the manner of women" - Genesis 18:11, and also: "For his wife was old, advanced in years" - S. Y. Agnon / Tales of the Baal Shem Tov, The Uncircumcised Wagon Driver, and also: "If we could talk about it quietly / you would understand that I am no longer the same David / your mother's sorrow, only a king advanced in years" - Nathan Yonatan / Another Song about Absalom)
Translation
Expression (Hebrew)
בָּא בַּיָּמִים
Definition (Hebrew)
אָדָם מְבֻגָּר מְאוֹד. זָקֵן.
("וְאַבְרָהָם וְשָׂרָה זְקֵנִים בָּאִים בַּיָּמִים חָדַל לִהְיוֹת לְשָׂרָה אֹרַח כַּנָּשִׁים"- בְּרֵאשִׁית יח יא, וְכֵן: "כִּי אִשְׁתּוֹ הָיְתָה זְקֵנָה בָּאָה בַּשָּׁנִים"- שַׁ"י עַגְנוֹן/ סִפּוּרֵי הַבֵּעשְׁ"ט, הֶעָרֵל בַּעַל הָעֲגָלָה, וְכֵן: "לוּ יָכֹלְנוּ לְדַבֵּר עַל כָּךְ בְּשֶׁקֶט/ הָיִיתָ מֵבִין שֶׁאֲנִי כְּבָר לֹא אוֹתוֹ דָּוִד/ תּוּגַת אִמְּךָ, רַק מֶלֶךְ בָּא בַּיָּמִים"- נָתָן יוֹנָתָן/ עוֹד שִׁיר עַל אַבְשָׁלוֹם)