NOTES for Deu 6:5
The call to love God "with all your heart, all your soul and with all your might" became the most important part of the yahviste, and quite as (later) Jewish traditions, where it became the prayer, by importance for the Judaism comparable with the " our Father " for Christianity. What was then so important in this call? Indeed, the love for God isn’t spoken about only in this chapter of the book of Deuteronomy. But it is in particular here that is said how grows in man the love for God and how to build relationships with Him. Everything begins naturally with the heart: indeed, in the language of the biblical books, precisely the heart indicates this spiritual center of the human personality, where the choice is made and decisions taken. And they are taken on the basis of the system of values and life priorities, by which man is guided, when making a particular life choice.
Naturally, when man turns to God, besides not to a certain abstract " God in general", but to the God of the Bible, he chooses the Torah and the way of righteousness, the way of the observation of the commandments given by God, and this, in his turn forms in the heart of such man a new system of values and priorities, corresponding to the Torah. And then we can say that the man gives his heart to God. But this is only the beginning. The new system of values and priorities changes all the internal life of the man, his "soul". It is not in this case about the soul in the sense, which we understand this word today, but the internal life of man entirely, his ideas, feelings, emotions, of what we collectively denote today as the inner world of man. It is impossible for him naturally not to change in accordance with this new system of values and priorities, of which now, after conversion, man began to be inspired.
But that is not yet all: after the internal life of man, also changes his outer life (if of course the conversion as a spiritual process, comes to its logical conclusion). The corresponding Hebrew word denotes not only the physical and mental powers of man, but also all his capacities and possibilities connected to the external demonstrations, possibilities defined not only by his internal personal potential, but also by external circumstances.
Actually, it is particularly this that we usually call the outer life, opposing it in a certain degree to the inner. It is not surprising that to the spiritual man the outer life will correspond to the inner, it will be defined by the same system of values and priorities as the life inside. And only then we can say that the person belongs completely to God, and his love for God manifests itself not only in words, but also in deeds.