Hebrews 3:12: Lorp, while I in Thy name believe

Lorp, while I in Thy name believe,
My power I over sin maintain;
But when to Thee no more I cleave,
I sink into myself again:
My heart, though sprinkled once with blood,
Becomes an evil, faithless heart;
And losing my sure trust in God,
I from the living God depart.

Soon, if I cease to watch and pray,
The unbelieving heart returns,
Rebels against Thy gracious sway,
With pride, desire, or anger burns.
My heart a cage of birds unclean,
Its old corrupt affections feels,
Its strong propensity to sin;
And God in me no longer dwells.

O let me then Thy warnings heed
Throughout my pilgrimage below;
With jealous self-mistrust proceed,
And humbly in Thy footsteps go.
And if I always watch and pray,
Who dost my evil heart remove,
Thou, Lord, wilt keep it far away,
Till quite destroy'd by perfect love.