At that time Michael shall stand up, The great prince who stands watch over the sons of your people; And there shall be a time of trouble, Such as never was since there was a nation, Even to that time. And at that time your people shall be delivered, Every one who is found written in the book. Daniel 12:1
Guardian angel is a term we hear at times, might even use it ourselves now and then. This verse may be the source of that term, a prince who stands watch over the sons of Daniel's people, Israel. Michael is one of but a very few names of angels we get to read in all of scripture. However, the times where Michael does appear are ones of victory over evil. It would appear from this verse that Michael is such an overwhelming power among God's angels that he is not allowed to 'stand up' all of the time. That his strength is so mighty seems good to me, because Israel and all of God's people certainly need a strong guardian angel.
"Careful there!" Michael might say to us as we praise his strength. For we always have the Lord God, who is called the Almighty One, with us, and God's angels will not accept praise or worship that belong to God Himself. John was met with a quick, "You must not do that!" when he tried to worship an angel during that great revelation of Jesus our Lord. Indeed we do not need to wish for a guardian angel as though God is not watching over us at all times. If we feel unguarded it is either a temptation from the devil or a lack of attention to God on our part. A little prayer and time in the Word can certainly get us back into the well-guarded fold of our Lord, the Good Shepherd.
Immanuel, which is to say, "God with us",Bucky