Chasidut for Kiddushin 79:13

Leviticus 26,3. “if you will walk in My statutes and ‎observe My commandments and carry them out.” At first ‎glance there appears to be unnecessary verbiage in this verse. We ‎would have expected the Torah to write simply: ‎אם תשמרו את ‏מצותי ונתתי גשמיכם בעתו‎, “if you will observe My commandments I ‎will provide your rainfall at the appropriate time.” However, the ‎reason for the additional words may be understood when we recall ‎that the Talmud in Kiddushin 40 states that G’d will ‎account a good intention as if it were a good deed, i.e. that the ‎good intention is already accounted as fulfillment of a ‎commandment. In other words, the good intention is accounted ‎as if it had already been translated into action, so that if through ‎an accident beyond one’s control actual performance of the good ‎intention was prevented, one is still given credit for it.‎Leviticus 26,3. “if you will walk in My statutes and ‎observe My commandments and carry them out.” At first ‎glance there appears to be unnecessary verbiage in this verse. We ‎would have expected the Torah to write simply: ‎אם תשמרו את ‏מצותי ונתתי גשמיכם בעתו‎, “if you will observe My commandments I ‎will provide your rainfall at the appropriate time.” However, the ‎reason for the additional words may be understood when we recall ‎that the Talmud in Kiddushin 40 states that G’d will ‎account a good intention as if it were a good deed, i.e. that the ‎good intention is already accounted as fulfillment of a ‎commandment. In other words, the good intention is accounted ‎as if it had already been translated into action, so that if through ‎an accident beyond one’s control actual performance of the good ‎intention was prevented, one is still given credit for it.‎
From this it follows that when one performs a good deed ‎‎(commandment) truly without any ulterior motive this may ‎result in such a person being transported to a higher spiritual ‎level than the one he had been on prior to performance of that ‎commandment. As a result of such a spiritual “promotion,” one ‎will be granted the opportunity to fulfill still other ‎commandments. The process will continue as a self-fulfilling ‎prophecy. This is what the sages had in mind when they said that ‎the reward of fulfilling a commandment is another ‎commandment. (Avot 4,2) It is also the meaning of ‎מצוה ‏גוררת מצוה‎, “performance of one commandment drags an ‎additional commandment in its wake.” (ibid.) Keeping this in ‎mind we can also understand the meaning of the line in ‎‎Niddah 73 quoted in the name of Tanna de bey Eliyahu ‎that every person who makes it a rule to study at least one ‎‎halachah daily, is assured that he will have a share in the ‎world to come. The meaning is that that individual will progress ‎daily ever closer to his ultimate objective of the world to come as ‎he has not been deflected from his path. This is the meaning of ‎the verse from Scripture quoted by the author of this saying, i.e. ‎Chabakuk 3,6 ‎הליכות עולם לו‎, “he will make steady progress ‎towards another, eternal life.”‎
The words: ‎אם בחקותי תלכו‎, mean that “if you cleave to My ‎statutes,” you will be considered as “walking” on the right path, ‎תלכו‎. The words: ‎ואת מצותי תשמרו‎, refer to your planning, ‎thinking of, performing My commandments, even if you have not ‎succeeded for some reason to carry out your good intention, I will ‎consider it as if you had done it, i.e. ‎ועשיתם אותם‎. When ‎understood in this manner, none of the words in our verse are ‎superfluous or repetitious.‎