This article from Gospel Coalition suggests that failing to read the Old Testament section of our bibles means we miss out on a wealth of teaching about our saviour, Jesus.
Entitled ‘Jesus on Every Page: 7 Reasons to Study Your Old Testament‘, the article points out why it’s important for us to read the whole of the bible, since All Scripture is inspired by God and is useful for teaching, rebuking, correcting and training in righteousness, so that the servant of God may be thoroughly equipped for every good work (2 Timothy 3:16-17).
The Old Testament doesn’t just “point forward” to Christ; it reveals him. It isn’t merely a series of signposts to Christ; his revealing shadow falls on every page, exciting faith and love in believing hearts.
If the Old Testament isn’t already part of your planned Bible reading, take a look at this post which offers some practical suggestions of how to begin. There is so much more to learn, so get started!