"Have you no words?"

From Hymns by William Cowper, 1779:

29. Exhortation to Prayer.

What various hindrances we meet In coming to a mercy seat! Yet who that knows the worth of prayer, But wishes to be often there?	While Moses stood with arms spread wide, Success was found on Israel's side; But when through weariness they fail'd, That moment Amalek prevail'd.
Prayer makes the darken'd cloud withdraw,      Prayer climbs the ladder Jacob saw, Gives exercise to faith and love, Brings every blessing from above.	Have you no words? Ah, think again, Words flow apace when you complain, And fill your fellow-creature's ear With the sad tale of all your care.
Restraining prayer, we cease to fight; Prayer makes the Christian's armour bright;     And Satan trembles when he sees The weakest saint upon his knees.	Were half the breath thus vainly spent To heaven in supplication sent, Your cheerful song would oftener be, "Hear what the Lord has done for me."

Willaim Cowper's Hymns, This hymn: What Various Hindrances We Meet