For I desire – chaphets – I delight in.
Nine occurrences in the O.T., all translated ‘desire’ but with a clear meaning to be something was pleasing or not.
Mercy – checed – goodness or kindness. Perhaps a good deed or favour.
We should all delight in kindness and favourable acts towards people.
At this time the Law allowed the Jews to offer animal sacrifices to cover or stand in place of their sins.
This is not what God wants.
He wants us to act towards our fellow people. When we show checed then we follow Christ.
How many times did Jesus heal or forgive sins, when the people of the Law told him he couldn’t?
Look back through the gospels because here we find the knowledge of God.