The Teachings of Rebbe Pinchas of Koretz and His Disciple, Rebbe Raphael of Bershad
R’ Pinchas taught: “You must be wholehearted with the Eternal your G-d” (Deuteronomy 18:13). From the Torah and all of the Prophets there are only two commandments that must be performed ‘with the Eternal your G-d.’ In terms of ‘wholeheartedness’ the text only says, ‘You must be wholehearted with the Eternal your G-d.’ Similarly, regarding the value of humility, the prophet says, ‘Walk humbly with your G-d.’ The reason is that in both of these commandments one can easily fool others; one can pretend to be pure while his heart is filled with cunning and wicked schemes. Similarly it is taught that humility can be faked. … [therefore] wholeheartedness and humility must be performed with G-d, who examines our hearts for health or pride [and cannot be fooled]”.
–Itturei Torah, edited by A.Y. Greenberg, vol. 6, p. 122c, cited in “Ah, the Life of a King,” by Gary Pokras (C)
SOURCE: Two Tzaddiks