The simplest of all love songs

Lord, help me to utter worthy, not worthless, words.

Let what I write here be always full of grace, seasoned with salt, so that I will know how to answer everyone.

Tune my heart to sing Thy grace;
Streams of mercy, never ceasing,
Call for songs of loudest praise.
Teach me some melodious sonnet,
Sung by flaming tongues above.