Glossa Ordinaria

And on both sides. About the river, that is, in this life we have the tree of life, that is, the body and blood of Christ, in which we are refreshed; beyond the river, that is, in the time to come we shall have him present. Or by "about the river" let us understand the time before baptism, by "beyond", that which was after baptism, that we may denote the faithful both in the old and in the new law saved through Christ, which Moses signified, who led the sons of Israel up to the river Jordan, and Jesus the son of Nave, who from the river Jordan led them into the land of promise. The tree of life. As if he said: He himself gives the refreshment; he himself also gives to them those who would prepare those to whom he himself renders it. Fruits. That is, the prophets and apostles fructifying unto the faith of the Trinity through the four parts of the world. And the leaves of the tree. As if he said: And that Christ shall render fruit, this shall be thus, that the apostles, and after them others also, shall scatter the leaves of Christ himself.