For unto you it is given in the behalf of Christ, not only to believe on him, but also to suffer for his sake;
All Commentaries on Philippians 1:29 Go To Philippians 1
Gaius Marius Victorinus
AD 400
It was therefore within his purpose that he gave to us the gift of trusting in him. This was an incomparable gift. It is only by faith in him that we are blessed with so great a reward. We are to believe in such a way as to be ready to suffer for him.