Colossians 4:17 (NKJV)
Have you ever had someone tell you to keep an eye on something, or have you ever told someone that? The reason for saying this is that you or another person wants to make sure that a certain thing stays where it is, or because there is something that has to be monitored for some reason. No one would tell you to keep an eye on something that is unchangeable, but rather the thing in question needs someone to pay attention to it so that everything is the way that it should be.
In Colossians 4:17 Paul tells Archippus to, "Take heed to the ministry which you have received in the Lord, that you may fulfill it". The words "take heed" mean to "keep an eye on", or "to look at". This shows us that it is also possible to not keep an eye on or look at something. The reason Paul gives for this attention is so that Archippus could fulfill the ministry he received from the Lord. An interesting question here would be that if Archippus had not kept an eye on the ministry he received from God, would he have fulfilled it?
Paul says that Archippus received something from God, but that Archippus had to keep an eye on it for it to be fulfilled. Is it possible that without some attention given by Archippus, God's plan and purpose for his life would not have been fulfilled or completed, and is that same thing possible in our lives? Even though God has a wonderful plan for us, if we are not keeping an eye on things, we may not receive or do everything that God intended. We need to be sure to properly pay attention to everything that God has given us in our lives.