God gives each person a free will choice whether to follow Him or not.
But if serving the LORD seems undesirable to you, then choose for yourselves this day whom you will serve, whether the gods your forefathers served beyond the River, or the gods of the Amorites, in whose land you are living. But as for me and my household, we will serve the LORD.”
Then the people answered, “Far be it from us to forsake the LORD to serve other gods!
Joshua 24:15-16 (NIV)
When a person chooses to follow God they can still have the freedom to make choices. God does not take away their free will.
My sheep listen to my voice; I know them, and they follow me.
John 10:27 (NIV)
When a Christian knows Jesus is speaking to them they have the choice to do what He says or reject what He says.
Obviously for a Christian, Jesus would want them to obey what He says.