Alec Motyer on how the titles "Old" Testament and "New" Testament negatively affect our thinking:
Inheriting as we do the classification of the Bible into two 'testaments', people still ask - and quite a few people at that - why we need to bother with the Old Testament.
It is one of the greatest, most important and most thrilling discoveries to find that the Bible is not two testaments but one book - one Jesus people, one divine purpose in Christ, one consistent revelation of God, one world, and (oh what joy!) one way of salvation.
(from Isaiah by the Day)