These three Psalms contain some of the more familiar verses that we find in the Psalms. Let's look at each of them individually. 46 gives us the assurance that God is our ever present help in the times of trouble. No matter what is happening around us, even if the earth gives way or the mountains tremble God is in control. It also gives us the command to: "Be still and know that I am God". That is a verse that we often attribute to Elijah when he flees from Jezebel after he wins the battle against the prophets of Baal.
Psalm 118 tells us with conviction that "This is the day that the Lord has made; let us rejoice and be glad in it." That is good to remember. I try to use this at all funerals and weddings to remind us of no matter what season in life we may find ourselves, God has made this day with all of its complexities.