9 Seeing then that we are of His members, in order that we may understand this mystery as I have said, Brethren, let us live holily, let us love God for His Own sake. Now He who shows to us while in our pilgrimage the form of a servant, reserves for those that reach their country the form of God. With the form of a servant has He laid down the way, with the form of God He has prepared the home. Seeing then that it is a hard matter for us to comprehend this, but no hard matter to believe it; for Isaiah says, “Unless ye believe you shall not understand;” let us “walk by faith as long as we are in pilgrimage from the Lord, till we come to sight where we shall see face to face.” As walking by faith, let us do good works.
In these good works, let there be a free love of God for His Own sake, and an active love of our neighbour. For we have nothing we can do for God; but because we have something we may do for our neighbour, we shall by our good offices to the needy, gain His favour who is the source of all abundance. Let every one then do what he can for others; let him freely bestow upon the needy of his superfluity. One has money; let him feed the poor, let him clothe the naked, let him build a church, let him do with his money all the good he can.
Another has good counsel; let him guide his neighbour, let him by the light of holiness drive away the darkness of doubting. Another has learning; let him draw out of this store of the Lord, let him minister food to his fellow-servants, strengthen the faithful, recall the wandering, seek the lost, do all the good he can. Something there is, which even the poor may deal out to one another; let one lend feet to the lame, another give his own eyes to guide the blind; another visit the sick, another bury the dead. These are things which all may do, so that in a word it would be hard to find one who has not some means of doing good to others. And last of all comes that important duty which the Apostle speaks of; “Bear ye one another's burdens, and so shall you fulfil the law of Christ.”
Source: Sermons on Selected Lessons of the New Testament (New Advent)