12 Hashem will open for you His bounteous store, the heavens, to provide rain for your land in season and to bless all your undertakings. You will be creditor to many nations, but debtor to none.
yif-TAKH a-do-NAI l’-KHA et o-tza-RO ha-TOV et ha-sha-MA-yim la-TAYT m’-tar ar-tz’-KHA b’-i-TO u-l’-va-RAYKH AYT kol ma-a-SAY ya-DE-kha v’-hil-VEE-ta go-YIM ra-BEEM v’-a-TA lo til-VEH
יב יִפְתַּח יְהֹוָה לְךָ אֶת־אוֹצָרוֹ הַטּוֹב אֶת־הַשָּׁמַיִם לָתֵת מְטַר־אַרְצְךָ בְּעִתּוֹ וּלְבָרֵךְ אֵת כָּל־מַעֲשֵׂה יָדֶךָ וְהִלְוִיתָ גּוֹיִם רַבִּים וְאַתָּה לֹא תִלְוֶה׃
28:12 To provide rain for your land in season
One of the blessings promised as a reward for observing God’s commandments in the Holy Land is the promise of rain b’ito (בעתו), ‘in its time,’ or ‘in season.’ While the Land of Israel is dependent on rainfall for water and irrigation, rain is valuable only if it falls at the right time. While at the right time, even a small amount of rain can be the source of much blessing, when it is not needed rain can be a curse, as it can ruin the crops. Because Eretz Yisrael does not have sufficient water sources, rain “in season” is a most significant blessing.