Some people who have realized this truth have taken it as far as to say that we are suppose to speak to our angels and they will obey our commands. There is no instruction in scripture to do this nor is there any example of that being done. We don't have the intelligence to administer all of the angels.
Many of the angels' protective duties described in Psalm 91 are preventative, and we certainly could not effectively command these activities.
These angels are dispatched exactly as this verse describes - by looking at the Father's face (Matthew 18:10). God Almighty controls them for us; but, we do have a part to play. Psalm 91 prefaces all of these promises about angels as being for those who dwell in the secret place of the most High and say that the Lord is our refuge and fortress and in Him we trust.
It is the combination of our faith in God and His faithfulness to us that releases the angels on our behalf. If it was solely up to God, His provision would be the same for everyone because of His mercy and grace.
We have to receive God's grace by faith (Ephesians 2:8). As we seek the Lord, become aware of His ministering spirits which were created to minister to us, and speak forth our faith in this area, He will send forth His angels on our behalf.
