Classic Poem

Why should I vex my soul and fret,
To see the wicked rise?
Or envy sinners waxing great,
By violence and lies?

As flow'ry grass cut down at noon,
Before the evening fades;
So shall their glories vanish soon,
In everlasting shades.

Then let me make the Lord my trust,
And practice all that's good;
So shall I dwell among the just,
And he'll provide me food.

I to my God my ways commit,
And cheerful wait his will;
Thy hand, which guides my doubtful feet,
Shall my desires fulfil.