Some arbitrary interpretation…

For there have risen many who have given to the plain words of Holy Writ some arbitrary interpretation of their own, instead of its true and only sense, and this in defiance of the clear meaning of words.
–Saint Hilary of Poitiers (c. 300-368)

Prayers and alms…

It cannot be doubted that the prayers of the Church, the Holy Sacrifice, and alms distributed for the departed relieve those holy souls and move God to treat them with more clemency than their sins deserve. It is the universal practice of the Church, a practice that she observes as having received it from… the holy Apostles.
–Saint Augustine (354-430)

A true sacrifice…

A true sacrifice is anything that we do with the aim of being united to God in holy fellowship – anything that is directed towards that supreme good and end in which alone we can be truly blessed… as the Latin word indicates: “sacri-ficium,” “holy-doing” or “holy-making.” Man himself can be a sacrifice, if he is consecrated in the name of God, and vowed to God – a sacrifice in so far as he dies to the world in order to live to God.
–Saint Augustine (354-430)

A living sacrifice…

Saint Paul starts by exhorting us to present our bodies as a living sacrifice, holy and acceptable to God, as an act of homage justly owed to him. He tells us not to conform ourselves to the world but to be transformed by renewing our will and our thinking: seeking to find out the will of God, to discover what is good, what is acceptable, what is perfect; for we ourselves are the whole of that sacrifice.
–Saint Augustine (354-430)

Even amidst temptations…

Even here amidst trials and temptations let us, let all men, sing alleluia. God is faithful, says holy Scripture, and he will not allow you to be tried beyond your strength. So let us sing alleluia, even here on earth. Man is still a debtor, but God is faithful. Scripture does not say that he will not allow you to be tried, but that he will not allow you to be tried beyond your strength. Whatever the trial, he will see your through it safely, and so enable you to endure. You have entered upon a time of trial but you will come to no harm – God’s help will bring you through it safely. You are like a piece of pottery, shaped by instruction, fired by tribulation. When you are put into the oven therefore, keep your thoughts on the time when you will be taken out again; for God is faithful, and he will guard both your going in and your coming out.
–Saint Augustine (354-430)