Father Hugh Barbour – Catholic Answers Article –
“Amen, amen, I say to you, whoever believes in me will do the works that I do, and will do greater ones than these, because I am going to the Father.” (John. 14:12).
Some Evangelical Protestants would say that it smacked of Roman or Orthodox devotion to the Mother of God and the saints. They would certainly say it is derogatory to the uniqueness of Christ alone. It might sound like a tag from St. Alphonsus Ligouri’s Glories of Mary. “Mary and her devoted John the Divine and the apostles and saints have done and are doing and will do greater works than those of Christ!” Imagine the reaction if that were a quotation from St. Louis de Monfort’s True Devotion!
Yet the words are there, fairly clear in their meaning. Let us see what St. Thomas Aquinas has to say about this passage: “The strongest sign of great power is when a person does extraordinary things not only by himself but also through others.”
… It is surely true that we cannot do greater works than Christ without him, but the works we do with him are still really and truly our works. Miracles, preaching, and repenting are the stuff of the life of God’s saints and his Church. There is no truer thing about the Son of God than that his union with us by grace, by faith, by power is as real as his union with his Father and their Holy Spirit.