שְׁמֹ֣ר וְשָׁמַעְתָּ֗ אֵ֚ת כָּל־הַדְּבָרִ֣ים הָאֵ֔לֶּה אֲשֶׁ֥ר אָנֹכִ֖י מְצַוֶּ֑ךָּ לְמַעַן֩ יִיטַ֨ב לְךָ֜ וּלְבָנֶ֤יךָ אַחֲרֶ֙יךָ֙ עַד־עוֹלָ֔ם כִּ֤י תַעֲשֶׂה֙ הַטּ֣וֹב וְהַיָּשָׁ֔ר בְּעֵינֵ֖י יְהוָ֥ה אֱלֹהֶֽיךָ׃ (ס)
你要謹守、聽從我所吩咐你的這一切話，好使你和你以後的子孫永遠得福，因為你行了永恆者你的上帝眼中看為善、看為正的事。
Tze'enah Ure'enah
“But make sure that you do not partake of the blood” [12:23]. The Torah wrote concerning this, that one is warned not eat blood. The Holy One will give him much good and also to his children, as the verse says here, “thus it will go well with you and with your descendants after you” [12:28]. Our sages learn from here the reward for the commandments. They say: the Holy One gives a good reward when the person does not eat blood. No person has a desire for this, since it is very disgusting to eat blood. Nonetheless, God gives him a good reward. How much more so, when a person does not engage in illicit sex or does not steal. People desire these things much more. Thus, the Holy One will give him a great reward.7Bahya, Deuteronomy, 12:28.
Rashi
and may the Lord be with the good with the one who performs that which is good and upright.