Psalm: Let them fall from one wickedness to another

This evil above all,
Jesus, I deprecate;
Before from sin to sin I fall
With all my nature's weight.
My tempted soul require:
But first Thy mercy show,
And save me, save me as by fire,
From quenchless flames below.

Further and further still
I surely shall sin on.
And through the last extremes of ill
To swift destruction run:
Unless my constant stay,
My present help Thou art,
And take the love of sin away
Out of this desperate heart.