Only the truth sets you free, and that truth is found in the Word of God. God used Martin Luther to put it into the language of the common people, so they would not be enslaved but would know the truth about God and their salvation.
Counting the cost of your discipleship looks like using your Christian freedom to proclaim the good news to others, to glorify God by showing forgiveness, by paying the debt of others, and by being confident in God's grace.
It is amazing grace that God answers and hears our prayers: He talks to us, and we get to be in his presence. We can petition Him (even over and over again), and He answers our prayers according to what is best for us.