Some have realized this truth and have taken it even further to say that we are supposed to speak to our angels and they will obey our commands. There is no instruction in bible to do this nor is there any example of it being done. Many of the angels' protective duties described in Psalm 91 are preventative.
These angels are dispatched exactly as this verse describes, by looking at the Father's face. God controls them for us; but, we do have a part to play. In Psalm 91 it is those who dwell in the secret place of the Most High, that are able to benefit from angelic activity (v. 1). Verse 2 further instructs us to say that the Lord is our refuge and fortress and that we are trusting in Him.
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 for us, and speak forth our faith in this area, He will send forth His angels on our behalf.
