Martin Luther had a rough time after he posted his 95 theses on the Wittenberg Church door.
He was often on the run from his enemies who wanted to kill him.
It is recorded that when Martin Luther had his darkest moments he would say to his friends
"Come let us sing the 46th Psalm and let them do their worst"
And his famous hymn “Ein Feste Burg ist unser Gott” (A Mighty Fortress is our God) is based on Psalm 46.
For Luther found strength in trusting the God who is the subject of Psalm 46.