What Paul is doing here is urging the Ephesians to continue on in their education about Christ. It is always so easy to go backwards instead of forwards. The problem that Paul is dealing with here is that for the Christian the old garments of ignorance and death are very comfortable. People go to a wedding, get old dressed up and then when they get back home they kick off the shoes and dress down to something comfortable. For us, what often seems comfortable is living the old life, rather than living the new life. Sometimes we are so comfortable in them that we don’t even know that we have put them back on. The sad truth is that our sins will have to be put off daily as long as we live. This is something that a Christian is called to do.