That statement shows quite a lack of faith in the promises of Jesus Christ when he established the Church and said he would be with us always and entrusted them with the power to loose and bind and to forgive or not forgive sins. Our faith is in God through his Son Jesus Christ and the promises he made not in a tradition of each man's personal testimony unguided by the Holy Spirit. The heresy started by Luther is a repudiation of the divinity of Christ by the very nature that he would have had to have failed in His promises.
I'm well aware of what he said and am a member of the body of Christ.