Jer 31, 33 I will be their God and they shall be my people

(Jer 31, 33) I will be their God and they shall be my people

[33] But this is the covenant which I will make with the house of Israel after those days, says the LORD: I will put my law within them, and I will write it upon their hearts; and I will be their God, and they shall be my people.

(CCC 715) The prophetic texts that directly concern the sending of the Holy Spirit are oracles by which God speaks to the heart of his people in the language of the promise, with the accents of "love and fidelity" (Cf. Ezek 11:19; 36:25-28; 37:1-14; Jer 31:31-34; and cf. Joel 3:1-5). St. Peter will proclaim their fulfillment on the morning of Pentecost (Cf. Acts 2:17-21). According to these promises, at the "end time" the Lord's Spirit will renew the hearts of men, engraving a new law in them. He will gather and reconcile the scattered and divided peoples; he will transform the first creation, and God will dwell there with men in peace. (CCC 368) The spiritual tradition of the Church also emphasizes the heart, in the biblical sense of the depths of one's being, where the person decides for or against God (Cf. Jer 31:33; Dt 6:5; 29:3; Isa 29:13; Ezek 36:26; Mt 6:21; Lk 8:15; Rom 5:5).