The foundational charge is that Torah must not remain external information but be taken to heart and transmitted constantly — impressed upon one's children, spoken at home and on the road, lying down and rising (Devarim 6:6-9) — and meditated upon day and night so that one's way succeeds (Yehoshua 1:8), delighting in it like a tree planted by streams of water (Tehillim 1:1-3).
Chazal frame Torah not as an inheritance passively received but as an ongoing acquisition: the Sifrei reads 'morashah' as 'me'orasah,' betrothed to Israel, meaning the relationship must be actively cultivated like a marriage (Sifrei Devarim 345:1), and the Ramban likewise explains that Torah was given as an eternal possession that must be guarded and proclaimed by each generation (Ramban on Devarim 33:4), while the Rambam states that the crown of Torah lies ready for whoever wishes to take it (Mishneh Torah, Torah Study 3:1).
Hasidic and musar sources locate the 'making it yours' specifically in the mind and heart: the Tanya teaches that through study the Torah's wisdom is absorbed into and encompassed by the intellect itself, in contrast to action-mitzvot which only clothe the soul (Tanya, Part I; Likkutei Amarim 5:8-10), and Rav Dessler writes that true receiving of Torah is a matter of the heart, becoming a reality that fixes a person's own level, in proportion to how thoroughly one verifies and internalizes his grasp of it (Michtav MeEliyahu (Rav Dessler)), adding elsewhere that this reception depends on self-nullification expressed through 'na'aseh' preceding 'nishma' (Michtav MeEliyahu (Rav Dessler)).
Nefesh HaChayim describes the ideal of never feeling one has fulfilled the obligation of Torah for its own sake, so that a person constantly strives to add to his grasp from day to day and hour to hour, following the model of Rabban Yochanan ben Zakkai who left nothing unstudied (Nefesh HaChayim, Gate IV 1-3).
The Gemara in Kiddushin records that although Rabbi Akiva's view that study is greater ultimately prevailed, the consensus was that study is greater only because it leads to action (Kiddushin 40b:8), a principle the Rambam codifies by ruling that study takes precedence over action precisely because it brings one to action (Mishneh Torah, Torah Study 3:3-4) and because the one who studies himself becomes qualified to perform mitzvot correctly, as study precedes action in every case (Mishneh Torah, Torah Study 1:3).
Pirkei Avot locates the making of Torah one's own in attachment to the sages and in treating study as a privilege rather than an inheritance one is owed: a person should make his house a meeting place for the wise and thirstily drink in their words (Pirkei Avot 1:4), and should prepare himself to learn Torah precisely because it is not an inheritance due to him by right (Pirkei Avot 2:12).
The Shulchan Arukh and Rema rule that every Jew, rich or poor, healthy or afflicted, is obligated to set fixed times for Torah study day and night (Shulchan Arukh, Yoreh De'ah 246:1), and that one should engage in Torah even not for its own sake since that leads to studying for its own sake, making Torah fixed and work occasional rather than pursuing wealth and honor through it (Shulchan Arukh, Yoreh De'ah 246:20-21); the Mesillat Yesharim likewise praises the early pious who made their Torah primary and their work secondary (Mesillat Yesharim 21:11).
Tomer Devorah frames the deeper purpose of Torah and mitzvot as resembling one's Creator not merely in form but in action, since the essence of the divine image lies in deeds, not structure (Tomer Devorah 1:1), while Rav Kook distinguishes one who merely performs what is written from one whose Torah study has risen to true comprehension of its inner purpose, able to generate new ideas and insights from the sanctity of Torah itself (Ein Aya, Shabbat 5:34), and Orot HaTorah describes study itself as bringing the potential of divine wisdom into actuality through one's own service and learning (Orot HaTorah 2:1-2).
Several Chazal passages stress that a father must teach his son Torah and that one who was not taught must teach himself, deriving this from the juxtaposition of verses (Kiddushin 29b:8), and discuss the proper scope and limits of such instruction (Kiddushin 30a:3-5), with Rabbi Yehoshua ben Levi teaching that one who teaches his son Torah is credited as though he received it from Chorev himself (Berakhot 21b:15); Rav Soloveitchik similarly treats teaching Torah to one's children as intrinsic to the mitzvah of talmud Torah and not merely instrumental (Contemporary Halakhic Problems, Vol II, Part I, Chapter V Education).
The Gemara in Yoma insists that poverty is no excuse for neglecting Torah, citing Hillel's example of forgoing half his wages to gain entry to the study hall (Yoma 35b:6-8), and Eruvin depicts the total absorption demanded of Torah scholars, for whom even a minor physical distraction interrupts study (Eruvin 65a:11-12), while Bava Metzia shows the honor given to sharp young students who mastered Torah through vigorous give-and-take (Bava Metzia 84b:14-15).
Rav Soloveitchik describes Torah study as a religious experience in which God reveals Himself to the one who immerses himself in its depths, the intensity of revelation corresponding to the depth of one's penetration and understanding (Contemporary Halakhic Problems, Vol I, Introduction, The Methodology of Halakhah), a parallel to Berakhot's formula for the blessing over Torah study asking that the words of Torah be made sweet in one's mouth (Berakhot 11b:16-18).
Sefat Emet describes Torah as what sustains the soul within the body, giving life in this world and the next, and teaches that one must labor in Torah even without fully grasping its reasons, since engaging with it despite limited understanding still grants a share in its root (Sefat Emet, Vayikra, Bechukotai 14:2, Sefat Emet, Bamidbar, Shavuot 18:3-4), and elsewhere describes the giving of Torah as renewed each year through the preparation granted to Israel (Sefat Emet, Bamidbar, Shavuot 4:8), themes echoed in the Likkutei Torah's reading that the words of Torah should appear new each day (Likkutei Torah, Devarim 1:1).
The Netziv teaches that the soul of Israel is a true match for the soul of Torah, so that study 'with your mouth' and internalization 'in your heart' are both necessary, including recording one's own novel insights as the verse urges (Haamek Davar (Netziv)), and the Rebbe's letter likewise calls for intensified diligence in Torah study flowing from awareness of standing before God, growing continually in joy (Igros Kodesh letter 10403); a related sicha teaches that Torah should be so engraved in one's memory and heart that God's presence remains even during mundane activity (Sefer HaSichos 5707 י"ט כסלו תש"ז).
Practical halachic guidance for making Torah one's own daily practice appears as well: the obligation for every Jew to write or acquire a Torah scroll of his own so that it is as though he received it at Sinai (Mishneh Torah, Tefillin, Mezuzah and the Torah Scroll 7:1, Kitzur Shulchan Arukh 28:1), the requirement to study the relevant Torah verses or Zohar before performing a mitzvah so as to act with proper intent (Kaf HaChaim (Palagi) 1:3), and Rav Mordechai Eliyahu's counsel to add a new meforash to one's weekly Torah study each year, continually layering additional depth onto what one has already made one's own (Rav Mordechai Eliyahu (Maamar Mordechai Hilchot Shabbat, Chelek 1 2:43)).
Tzitz Eliezer (18:63) addresses making Torah one's own by describing the need to contemplate one's conduct and direct every aspect of life toward the Torah's testimony, so that one's worldly ways themselves become enduring halachot.
Mishneh Halachos (10:156) takes up the practical question of how one best internalizes Torah study, weighing study with a chavruta against solitary study, and concludes that the right path depends on a person's individual nature, with consistent, scheduled study being the essential constant regardless of method.
Revavos Ephraim (3:523) addresses the obligation to set fixed times for Torah study while earning a livelihood, alongside related questions of honoring one's teachers and yeshiva, reinforcing that making Torah one's own requires a disciplined, ongoing personal schedule of learning.