Psalm 84

5 Happy are the people whose strength is in You,
whose hearts are set on pilgrimage.
6 As they pass through the Valley of Tears,
they make it a source of springwater;
even the autumn rain will cover it with blessings.
7 They go from strength to strength;
each appears before God in Zion.
(Ps 84:5-7)


If our hearts were "set on a pilgrimage" the Valley of Tears would suddenly become a source of springwater. What and how is a "heart set on pilgrimage"?