8. The religion which originates in the mystery of the Redemptive Incarnation, is the religion of "dwelling in the heart of God", of sharing in God's very life. Saint Paul speaks of this in the passage already quoted: "God has sent the Spirit of his Son into our hearts, crying, 'Abba! Father!' " (Gal 4:6). Man cries out like Christ himself, who turned to God "with loud cries and tears" (Heb 5:7), especially in Gethsemane and on the Cross: man cries out to God just as Christ cried out to him, and thus he bears witness that he shares in Christ's sonship through the power of the Holy Spirit. The Holy Spirit, whom the Father has sent in the name of the Son, enables man to share in the inmost life of God. He also enables man to be a son, in the likeness of Christ, and an heir of all that belongs to the Son (cf. Gal 4:7). In this consists the religion of "dwelling in the inmost life of God", which begins with the Incarnation of the Son of God. The Holy Spirit, who searches the depths of God (cf. 1 Cor 2:10), leads us, all mankind, into these depths by virtue of the sacrifice of Christ.