Chasidut do Pieśń nad pieśniami 1:1

Still another angle from which to view Yaakov’s blessing for ‎Asher. The author, quoting the opening lines of Song of Songs, ‎שיר השירים אשר לשלמה ישקני מנשיקות פיהו כי טובים דודיך מיין‎ “The ‎Song of Songs by Solomon; oh give me the kisses of your mouth, ‎for your love is more delightful than wine.” Solomon juxtaposes ‎two different types of service of G’d. There are people who serve ‎the Lord from an innate feeling of love for G’d, Who, in His love ‎for us has agreed to use us as His servants, (in spite of our many ‎shortcomings). These people are overwhelmed by the fact that ‎‎Hashem even rewards us generously for our service, far ‎beyond anything we have a right to expect. (Compare ‎‎B’rachot 34). While at first glance this type of service of the ‎Lord is of the highest level, neither resulting from fear of ‎punishment for transgressions, nor seeking reward, there is a ‎level of serving G’d which is an even higher plane than the level ‎based on love of Hashem.‎
This is a level of serving G’d in which the servant is totally ‎unaware, and therefore unappreciative of, any reward. This ‎service of Hashem flows from sheer gratitude that ‎‎Hashem has chosen us to be His special people, period. ‎Yaakov alludes to this kind of service of the Lord when he ‎formulated the blessing for his son Asher.‎