This is simple, but there is symbolism of triplets on triplets.
Lord, who hast form’d me out of mud,
And hast redeem’d me through thy bloud,
And sanctifi’d me to do good;
Purge all my sinnes done heretofore:
For I confesse my heavie score,
And I will strive to sinne no more.
Enrich my heart, mouth, hands in me,
With faith, with hope, with charitie;
That I may runne, rise, rest with thee.
George Herbert, The Temple, 1633