For what else means it that he ran, but that we through the hindrance of our sins cannot by our own virtue reach to God. But because God is able to come to the weak, he fell on his neck. The mouth is kissed, as that from which has proceeded the confession of the penitent, springing from the heart, which the father gladly received.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Hom. de Patre et duob. Fil.