God does not call the qualified, he qualifies the called.
Follow without delay, that was the reaction of the first guys that were invited to be disciples of Jesus, but why did he choose these guys?
Disciples were usually hand picked from those that were qualified for the job, those that were already following a Rabbi, but Jesus didn't look for somebody that had the qualifications that we would think would qualify somebody for the job.
We are not chosen based on our past performance, we were picked based on our potential, thankfully we didn't have to earn a position in kingdom work by doing. Jesus sees what we can become if we are willing to learn from him and if we are willing to give our lives over to him.
Thank you Lord for seeing us for our potential that we can live up to through your strength.