Jesus had just told Peter to follow Him; but Peter wanted to know what the Lord had planned for John. Instead of  answering Peter's question, the Lord told him that what He had in store for John was none of Peter's business.

Satan diverts many people by getting them preoccupied with what others are doing for the Lord. Comparing ourselves with others, whether we come out better or worse, is unwise (2 Corinthians 10:12). 

We need to be so single-minded following the Lord, that we don't look to the right or to the left to see what others are doing. It doesn't matter if we are doing as much to serve the Lord as someone else. The question is, are we doing all that the Lord wants us to do.

Singleness of purpose and vision is needed to victorious Christian living. James said that if we try to master many things we will fail (James 3:1). We have to set priorities and focus on them.

The Bible teaches that memory can be a powerful force for good in our lives. It is always good to remind ourselves that we were apart from God's saving grace at one time. It is an antidote against pride and self-righteousness. 

A person who remembers what he used to be will have a clearer understanding of who he is now. We have to cultivate our memories by meditating on the great things God has done for us and spoken to us.