All of us, at least to some extent, shape our identity and measure ourselves in response to the comments and ideas of others. From an early age we are taught how to speak, dress and act in order to be ‘acceptable’ to others. Usually this is a good thing, but sometimes it can go horribly wrong.

Celebrities, sports stars and young people can become so vulnerable to the expectations and reactions of the public, media and social media trolls that they end up with little identity of their own, or they develop a very distorted idea of their identity. Unfortunately, both these experiences have significant negative impacts on a person’s mental wellbeing.

This Sunday’s Gospel teaches us how to find our true identity.

Both the ‘people’ and Peter have ideas about who Jesus is. For the people he is John the Baptist, Elijah or one of the prophets returned from the dead. For Peter, Jesus is the Christ, the Messiah. But what happens next reveals that Peter and Jesus have very different ideas about who this Messiah is.

Though Peter understands correctly that Jesus is the Messiah, he misunderstands the kind of Messiah that Jesus is. Perhaps he wanted a Messiah who was a great warrior-king, powerful and glorious. He can’t imagine that his Messiah would meet the kind of end that Jesus talks about.

Jesus calls Peter, ‘Satan’. If Peter is to learn the true identity of Jesus and come to think with God’s heart, he must ‘get behind’ (follow) Jesus.

Such followers are called to renounce their false identity (often defined by what we have, what we work at, our delusions) and to find their true identity as God’s beloved son or daughter through a life poured out in loving service of others (taking up his/her cross). 

I often think that parents are the great examples of what all this means. They constantly have to go beyond themselves, their own needs, hopes and desires and sacrifice their time, energy and money to care for their children with love. In doing so, they often discover their very best selves.

In the Gospel, Jesus, the true Messiah, appears not as a glorious God-King but as the Suffering Servant of God about whom Isaiah speaks in the first reading. The way of discipleship is not about self-glory but about true service, and about discovering our true identity as God’s beloved sons and daughters.

As disciples of Jesus we try to live our lives as a real service to our brothers and sisters in the world. But it’s not possible to do that until and unless we realise our true identity and call as God’s own people.

Then we become a source of love, mercy, hope, compassion, justice, truth, concern and Christian action as servants of God and each other. That is DOING the Gospel.