I recently purchased WILLIAM COWPER: Selected Poetry and Prose, editted by David Lyle Jeffrey. One of the poems in the book is titled "Truth". It is an interesting and challenging work of 591 lines, with much to explore in it, but I was particularly taken by these lines near the beginning:

Grace leads the right way: if you choose the wrong,
Take it, and perish; but restrain your tongue.
Charge not, with light sufficient, and left free,
Your wilful suicide on God's decree.