Matthew 4:11, Then the Devil left Him, and behold, angels came and were ministering to Him.
Luther takes an interesting approach to this: “This was written for our comfort, so that we would know how many angels serve us when one devil attacks us, if we fight valiantly. And if we stand firm, God does not let us suffer scarcity, but angels must first come from heaven and become our bakers, cellarers, and cooks and serve us in all our needs. This was not written for Christ’s sake, for He does not need it. If the angels served Him, then they can and should serve us too” (Church Postil, sermon for Lent 1 on Matthew 4:1-11, LW 76:374; emphasis mine).
If angels served Christ, the Prince of Peace, in His time of need according to His humanity, then how much more does God send them to serve us. Indeed, we are not aware of what form they serve us. I am under the persuasion that they protect us from evil in ways we are not aware. These can be in simple ways and not so simple ways.
In a way that is simple, I often find myself daydreaming whilst I’m driving down the highway, not paying attention to anything, then wonder how it is I survived. I do not believe in luck. Luck is the most quintessential human delusion, and it is reserved for people without a God who cares for them and protects them. I am convinced it is an angel whom God sends to protect me. I could be wrong, but I can think of no other explanation.
In a not so simple way, who knows of the spiritual battles that are happening around us? A pastor once told me it’s possible that a guardian angel specifically designated to him and me could be battling a demon at this very moment. I do not know whether or not this is true, but it is certainly comforting. After all, this sounds like something God would do, for He has a habit of working behind the scenes without our knowledge.
However it occurs, take comfort in knowing that God most certainly sends His angels to protect us from evil. This event precedes Jesus’ teaching of the Lord’s Prayer. When we pray, “deliver us from evil,” perhaps God is doing just that with the angels He sends to serve us, though we remain unaware.
The Lutheran Column 