3445. 'And Isaac's servants dug a well there' means the doctrine that came from there. This is clear from the meaning of 'a well' as the Word, dealt with in 2702, 3424. Now because the Word is doctrine itself and so the Word is the source of all doctrine taught by the Church, 'digging a well' therefore means doctrine drawn from there, that is to say, from the literal sense of the Word, since that sense is the subject here. But the doctrine itself drawn from the literal sense of the Word is invariably the same, that is to say, it is always concerned with charity and love - charity towards the neighbour and love to the Lord. For such doctrine and life lived according to it constitute the whole Word, as the Lord teaches in Matthew 22:37-40.