Likutei Moharan 87:2/ליקוטי מוהר"ן פ״ז:ב׳

12. This is the meaning of [the opening verse]: {“Give truth to Yaakov, kindness to Avraham.”}

2Give truth to Yaakov—In other words, to fear. For YaAKoV signifies fear, as connoted by “The ÆKeV (end product of) humility is fear of God” (Proverbs 22:4), <i.e., fear of [His] exaltedness>. Then certainly:

3kindness to Avraham—For anyone who comes to cleave to God is called AVRahaM, derived from AVo RaM (I will come to the Exalted One).

4This is as it is written: “Justice will be the girdle of his loins, and faith the girdle of his waist” (Isaiah 11:5). [Yet this would imply that] justice is identical to faith. However, as long as it does not have truth bound to it, it is called justice. Once truth is bound to it, it is called faith. And then all good and all light reside in it (Zohar III, 198b) .