The Alter Rebbe will finish off the idea explained here at length, noting that the one type of love that we are commanded to achieve is by contemplating Hashem’s Oneness:
This knowledge of Hashem’s Oneness is what every person needs to think about very thoroughly, and this process of contemplation is dependent on the person’s own choice, and therefore, the resulting love of Hashem produced by that contemplation is also his own choice and accomplishment.
Part 3
The second explanation of “וְּאָּהַבְתָּּ - you will love Hashem” is that it is speaking in the future tense as a prediction, that this love will come by itself, and this is the aspect of the “Great Love for Hashem” that comes from Above, from Hashem Himself.
In Hebrew grammar, the word “וְאָּהַבְתָּּ - and you will love,” could mean either a command – ‘and you should love,’ or it could mean future tense - ‘and you will come to love.’ Now, we are explaining it to mean in the future tense, that you will come to love Hashem, since He will give this love to you. This love is called, “Great Love” since it is a great and unlimited love, compared to a person’s finite love:
In this context the explanation of “ש ְמַע - Hear” (in the verse “ש ְמַע - Hear Yisroel, that Hashem who is our G-d, this Hashem is One”) is an expression of actual hearing, for this type of love is not able to be understood at all, since this revelation is higher than any understanding.
