10 Finally, be strong in the Lord and in his mighty power. 11 Put on the full armor of God, so that you can take your stand against the devil’s schemes.12 For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms. 13 Therefore put on the full armor of God,so that when the day of evil comes, you may be able to stand your ground, and after you have done everything, to stand.—Ephesians 6:10-13 NIV
Since we don’t actually see the angels and the demons surrounding us, it is hard for us to stay aware of the continuous battle going on around us everyday. But there are several examples of this in the Scriptures. The example in Daniel 10 involves at least two demonic princes and two angelic princes.
20 So he said, “Do you know why I have come to you? Soon I will return to fight against the prince of Persia, and when I go, the prince of Greece will come; 21 but first I will tell you what is written in the Book of Truth. (No one supports me against them except Michael, your prince.–Daniel 10:20, 21 NIV
Just as Daniel was not physically involved in the battle, neither are we. Our battlefield is our mind. That is why our armor is not physical armor, it is invisible things that protect our thought patterns from being overwhelmed by evil. These weapons are truth, righteousness, readiness that comes from the gospel of peace, faith, salvation and the Sword of the Spirit, which is the Word of God. For us to be fully dressed in the armor God has provided for us takes time. It is not a piece of clothing that you can just throw in the corner and then grab when bad times come. It takes hours and hours of prayer, Bible study and meditation to get fully dressed. satan knows where the holes in our armor are. We must pray daily for the Holy Spirit to show us the holes and then spend whatever time it takes in prayer and Scripture study to mend those holes. While we reside in this old piece of decaying flesh, we will never be able to fill all the holes. That is why God has His angels encamped around us.
7 The angel of the Lord encamps around those who fear him, and he delivers them.—Psalm 34:7 NIV