The Lord ... never fails.
Don't worry about success or failure. Concentrate on trusting God and obeying Him. Move forward, knowing He never blunders, breaks down, falls, fizzles, flops, flounders, folds, loses out, or disappoints.
He never fails.
Thou changest not, Thy compassions, they fail not; as Thou hast been, Thou forever wilt be.
(Thomas O. Chisholm, in the hymn "Great Is Thy Faithfulness")