1 Peter 2:21-22

21 For you have been called for this purpose, since Christ also suffered for you, leaving you an example for you to follow in His steps, 22 WHO COMMITTED NO SIN, NOR WAS ANY DECEIT FOUND IN HIS MOUTH;

We are called to salvation, and in that calling we are also called to suffer as Christ did. Hence, we have His example to follow. And He did suffer unjustly, since He committed no sin or was ever deceitful. He was a perfect man. And if we try to be as He was, we will suffer as He did, inflicted from the hands of sinful men, from Satan and his demons, from the sinful world, and from our own sinful flesh.