(א) וַיֹּ֤אמֶר ה' אֶל־אַבְרָ֔ם לֶךְ־לְךָ֛ מֵאַרְצְךָ֥ וּמִמּֽוֹלַדְתְּךָ֖ וּמִבֵּ֣ית אָבִ֑יךָ אֶל־הָאָ֖רֶץ אֲשֶׁ֥ר אַרְאֶֽךָּ׃ (ב) וְאֶֽעֶשְׂךָ֙ לְג֣וֹי גָּד֔וֹל וַאֲבָ֣רֶכְךָ֔ וַאֲגַדְּלָ֖ה שְׁמֶ֑ךָ וֶהְיֵ֖ה בְּרָכָֽה׃ (ג) וַאֲבָֽרְכָה֙ מְבָ֣רְכֶ֔יךָ וּמְקַלֶּלְךָ֖ אָאֹ֑ר וְנִבְרְכ֣וּ בְךָ֔ כֹּ֖ל מִשְׁפְּחֹ֥ת הָאֲדָמָֽה׃ (ד) וַיֵּ֣לֶךְ אַבְרָ֗ם כַּאֲשֶׁ֨ר דִּבֶּ֤ר אֵלָיו֙ ה' וַיֵּ֥לֶךְ אִתּ֖וֹ ל֑וֹט וְאַבְרָ֗ם בֶּן־חָמֵ֤שׁ שָׁנִים֙ וְשִׁבְעִ֣ים שָׁנָ֔ה בְּצֵאת֖וֹ מֵחָרָֽן׃ (ה) וַיִּקַּ֣ח אַבְרָם֩ אֶת־שָׂרַ֨י אִשְׁתּ֜וֹ וְאֶת־ל֣וֹט בֶּן־אָחִ֗יו וְאֶת־כׇּל־רְכוּשָׁם֙ אֲשֶׁ֣ר רָכָ֔שׁוּ וְאֶת־הַנֶּ֖פֶשׁ אֲשֶׁר־עָשׂ֣וּ בְחָרָ֑ן וַיֵּצְא֗וּ לָלֶ֙כֶת֙ אַ֣רְצָה כְּנַ֔עַן וַיָּבֹ֖אוּ אַ֥רְצָה כְּנָֽעַן׃ (ו) וַיַּעֲבֹ֤ר אַבְרָם֙ בָּאָ֔רֶץ עַ֚ד מְק֣וֹם שְׁכֶ֔ם עַ֖ד אֵל֣וֹן מוֹרֶ֑ה וְהַֽכְּנַעֲנִ֖י אָ֥ז בָּאָֽרֶץ׃ (ז) וַיֵּרָ֤א ה' אֶל־אַבְרָ֔ם וַיֹּ֕אמֶר לְזַ֨רְעֲךָ֔ אֶתֵּ֖ן אֶת־הָאָ֣רֶץ הַזֹּ֑את וַיִּ֤בֶן שָׁם֙ מִזְבֵּ֔חַ לַה' הַנִּרְאֶ֥ה אֵלָֽיו׃ (ח) וַיַּעְתֵּ֨ק מִשָּׁ֜ם הָהָ֗רָה מִקֶּ֛דֶם לְבֵֽית־אֵ֖ל וַיֵּ֣ט אׇהֳלֹ֑ה בֵּֽית־אֵ֤ל מִיָּם֙ וְהָעַ֣י מִקֶּ֔דֶם וַיִּֽבֶן־שָׁ֤ם מִזְבֵּ֙חַ֙ לַֽה' וַיִּקְרָ֖א בְּשֵׁ֥ם ה'׃ (ט) וַיִּסַּ֣ע אַבְרָ֔ם הָל֥וֹךְ וְנָס֖וֹעַ הַנֶּֽגְבָּה׃ {פ}
(1) ה' said to Abram, “Go forth from your native land and from your father’s house to the land that I will show you. (2) I will make of you a great nation,
And I will bless you;
I will make your name great,
And you shall be a blessing.
(3) I will bless those who bless you
And curse the one who curses you;
And all the families of the earth
Shall bless themselves by you.” (4) Abram went forth as ה' had commanded him, and Lot went with him. Abram was seventy-five years old when he left Haran. (5) Abram took his wife Sarai and his brother’s son Lot, and all the wealth that they had amassed, and the persons that they had acquired in Haran; and they set out for the land of Canaan. When they arrived in the land of Canaan, (6) Abram passed through the land as far as the site of Shechem, at the terebinth of Moreh. The Canaanites were then in the land. (7) ה' appeared to Abram and said, “I will assign this land to your offspring.” And he built an altar there to ה' who had appeared to him. (8) From there he moved on to the hill country east of Bethel and pitched his tent, with Bethel on the west and Ai on the east; and he built there an altar to ה' and invoked ה' by name. (9) Then Abram journeyed by stages toward the Negeb.
According to Rav Hirsch the word דִּבֶּר needs to have a reason because it just could have said אמר like in the first Pasuk.
Rav Hirsch learns from the word דִּבֶּר that Abraham accepted 'ה demand not because of the promises of 'ה but because Abraham believed in 'ה.
From this we can learn that rewards can be helpful and nice, however when someone follows demands unconditionally it is the proof of full believe.
So this should show us that for good deeds you don't need to get rewards.