Midrash su Salmi 119:59

If you will walk in my statutes: This is what is written (Psalms 119:59), "I considered my ways and I turned my feet to your testimonies." David said, "Master of the universe! On each and every day I would consider and say, 'To place x and to the home of y am I walking,' but my feet would bring me to the synagogues and to the Houses of Study. - this is what is written, "I considered my ways and I turned my feet to your testimonies." Rabbi Huna said in the name of Rabbi Acha, "'I considered' the giving of the reward for the [fulfillment of] the commandments and the loss for the sins, 'and I turned my feet to your testimonies.'" Rabbi Menachem the son-in-law of Rabbi Elazar BeRebbe Avina said, "'I considered,' what You wrote us in the Torah, 'If you will walk in my statutes' and what is written there? 'And I will give peace in the land' (Leviticus 26:6). [Likewise (Leviticus 26:14)] 'And if you will not listen to me,' what is written there? 'And I will add to punish you'" (Leviticus 26:18). Rabbi Abba the son of Rabbi Chiya said in the name of Rabbi Yonatan, "'I considered' the blessings and 'I considered' the curses - the blessing are from [the first letter,] alef to the [last letter,] tav; the curses are from [the letter,] vav to [the letter before it,] hay - and not only that, but they are backwards (in reverse order). Rabbi Avin said, "[The intention is that God is saying,] 'If you merit it, behold, I will reverse for you the curses into blessings.'" When is that? When you observe my Torah. This is what is written, "If you will walk in my statutes."