Namdev

Namdev was a great saint. He didn’t have Knowledge, but God used to appear before him and talk to him. One day God said to him,”Namdev, I come to you because of your love, but you can’t progress spiritually until you receive Knowledge.”So Namdev went and received Knowledge from Saint Gyaneshwar.So even someone who could make the Lord appear to him needed Knowledge.
www.manavdharam.org