21 As for Me, this is My Brit (Covenant, [see Isaiah 42:6; 49:8; 54:10; 55:3]) with them [i.e., with Moshiach’s zera, see Isaiah 53:10], saith Hashem; My Ruach [Hakodesh] that is upon thee [Moshiach, see Isaiah 11:2; 42:1; 48:16; 61:1], and My words which I have put in thy mouth, shall not depart out of thy mouth, nor out of the mouth of thy zera [Isaiah 53:10], nor out of the mouth of the zera of thy zera [i.e. Moshiach’s zera generationally], saith Hashem, from henceforth and ad olam (forever).