Saint Luke's Gospel

Primum quidem sermonem feci de omnibus, O Theophile, quae coepit Jesus facere et docere.  De omnibus se dicit Christi factis et dictis in Evangelio scripsisse, non quod omnia comprehendere potuerit, ne sit contrarius Joanni qui ait: Multa quidem et alia signa fecit Jesus in conspectu discipulorum suorum, quae non sunt scripta in libro hoc, sed quod de omnibus elegerit unde faceret sermonem, quae judicavit apta et congrua sufficere officio dispensationis suae. Theophilus interpretatur Dei amator, vel a Deo amatus. Quicunque ergo Dei amator est, ad se scriptum credat, suaeque hic animae, quia Lucas medicus scripsit, inveniat salutem. Et notandum quod ait: Quae coepti Jesus facere et docere. Primo facere, postea docere. Quia Jesus bonum doctorem instituens, nulla nisi quae fecit docuit. Sanctus Beda, Super Acta Apostolorum, Caput Primum Migne PL 93 11-12

The first work I composed concerning all the things, O Theophilus, which Jesus began to do and teach. 1 Concerning all the things, he says, which Christ did and said, he has written in his Gospel, not that he was able to include everything in there, lest it be contrary to John who said, 'Certainly many other signs Jesus did in the presence of His disciples which are not written in this book,' 2 but that he chose from everything in the making of his work what he judged to apt and fitting for the fulfillment of the office given to him. Theophilus translated means lover of God, or loved by God. Whoever, therefore, is a lover of God let him think that it is written for him and for his own soul he may find healing, because it is Luke the physician who wrote it. And let it be noted that he says, 'What Jesus began to do and say.' Firstly He does and then He teaches. Because one cannot present Jesus as a good teacher unless what He did He taught. Saint Bede,  from the Commentary On The Acts of The Apostles, Chap 1 1 Acts 1.1 2 Jn 20.30