The Fitness God Requires

Joseph Hart wrote the hymn "Come, Ye Sinners" in 1759 describing the kind of fitness that God requires. The truth of this hymn's gospel invitation still stands.  

Come, ye weary, heavy laden,
Bruised and broken by the fall;
If you tarry ‘til you’re better,
You will never come at all.
Not the righteous, not the righteous;
Sinners Jesus came to call.
Let not conscience make you linger,
Nor of fitness fondly dream;
All the fitness He requires
Is to feel your need of Him.