DEUT216 It is a positive commandment to love the blessed God with all one's heart, spirit and might as Scripture states, And you shall love Hashem your God with all your heart and with all your soul and with all your might [this verse]. This is the way toward love for him: When we will meditate on His activities until we comprehend Him to the extent of our ability, the heart will become inflamed with a love for Him; this is the love that is essential for us. So let a person set his entire thought on affection for the blessed God. A man cannot love the Holy One, Blessed is He, except through knowledge, by comprehending Him. Through this knowledge the affection comes: if it [the knowledge] is a little, then a little [love]; if it is much, then much. Therefore a person needs to set himself solely to understand and grow wise through the fields of wisdom and comprehension that convey the glory of his Maker, to the extent of the ability that a person has to understand and realize. This is among the commandments that a person has a duty to observe at every occasion and every moment. Included in this mitzvah [is the obligation] to bring human beings closer to His service and worship (blessed is He), and to make Him beloved by His human beings, as Abraham our father did (peace abide with him) -- as Scripture states, and the souls that they had formed in Haran (B're'shith 12:5). For this reason the Holy One, Blessed is He, called him His friend, as it says, Abraham My friend (Yesha'yahu 41:8).