“Not the labors of my hands
can fulfill thy law’s demands;
could my zeal no respite know,
could my tears forever flow,
all for sin could not atone;
thou must save, and thou alone.” – Augustus Toplady, “Rock of Ages Cleft for Me,” second verse
We are wholly dependent on Christ to atone for our sin and bear the wrath of God’s judgment in our place.
Source: https://en.wikipedia.org/wiki/Rock_of_Ages_(Christian_hymn)
