Entering a relationship with Jesus is not a guarantee that you will never have any doubts. In fact, even those who saw Jesus in the flesh still struggled with doubt. Learning how to navigate our doubts in a way that strengthens our faith is a key factor in our ability to walk in relationship with Jesus.
A fruitful prayer life is cultivated by constant practice.
Jesus died on the cross and rose from the grave to set us free, but experiencing that freedom is a choice.
We defeat inadequacy by, like David, deciding to do what only we can do and using what God has given us.