arbitrary scales

You held my life in your hands
And measured the weight of it's value
And found it lacking
But your hands are arbitrary scales
And are not fit for judgement
What is heavy one day
Is light the next
Depending on your weakness
Depending on your strength

And I am unsure of a fairer measure
For surely all our hands are such
So who can measure life
And say this is worthy
This is not
Where are the scales
Upon which my soul can rest
And know its measure is felt
In truth, mercy and justice