Commentary: (Second Commentary on This Verse)
I began to speak yesterday of the dangers to watch out for in our Christian walk. The devil is no fool when it comes to dealing with us. He knows our weak spots and is sure to attack us whenever he can. I had a professor in Bible College who warned us that though we might resist the devil and he appears to be running away, we can be sure he will find another way to seek to trip us up. We'll never be free from his attacks this side of Heaven. Paul encourages us to be wise which means, in part, to learn from our past and be aware of the probability of being tempted again in the same manner.
Today, I'd like to suggest that we also be aware of the good opportunities afforded us to be used of God to minister His grace to others. Too often we're too late to recognize a chance we just had to witness to someone or show some tender care in the name of Christ. Think of Jesus when He moved from place to place. He was observant, like seeing Zacchaeus up in a tree, a woman in a synagogue who was crippled and needing to be healed, or numerous other times when He "seized" the opportunity to teach when He saw it, as when He observed the poor widow casting her two coins into the offering basket, or when He heard the disciples arguing who would be greatest in the coming Kingdom. Jesus was always aware of His situation. He walked circumspectly! He didn't trip up and He didn't miss a chance to show His Father's love to lost and broken humanity.
Basically our daily verse is saying, "Live with you eyes wide open and don't be a fool to fall for Satan's schemes but be wise to seize every opportunity to do good."