What does Ephesians 6:18 mean?
After describing the pieces of the armor of God, Paul adds another important part of spiritual battle: prayer. This is not a piece of spiritual armor, yet is essential to winning spiritual battles. Why? Prayer connects us to the power of God, which is necessary to defeat spiritual enemies. Communication in battle is often the difference between victory and defeat. This is especially true when referring to soldiers hearing the instructions of their Commander.Paul then notes some specific applications of prayer in this verse and the next. First, believers are to pray "in the Spirit." Our prayers are not merely our thoughts or about our desires, but are to be done in submission to God.
Next, we are to "keep alert." While we may not be literally praying every waking second, there is never a good time to set prayer aside. It's a tool we need to have in constant use (1 Thessalonians 5:17).
Third, prayer is something to do "with all perseverance." We do not pray once each day and then stop. We are to talk with God persistently and about all matters. Nothing is too big or too small to discuss with the Lord.
Finally, Paul highlights the importance of praying for the needs of other believers. We praise God in prayer, pray for our own needs, and also pray for the needs of others. Each of these areas is important.