This text comes from Catholic Hymns (1860), a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
God of mercy let us run
Where yon fount of sorrow flows,
Pondering sweetly one by one,
Jesu's wounds and Mary's woes.
Ah! those tears our Lady shed,
Enough to drown a world of sin;
Tears that Jesu's sorrows fed,
Peace and pardon well may win.
His five wounds a very home
For our prayers and praises prove;
And our Lady's woes become
Endless joys in Heaven above.
Jesu who for us didst die,
All on Thee our love we pour;
And in the Holy Trinity
Worship Thee for evermore.