No such thing as good fruit without good seed. Knowing truth matters first before any good works can be done

"... what an awful delusion has taken hold upon so many men's minds who ridicule the pure doctrine and say to us: 'Ah, do cease clamoring, pure doctrine! Pure doctrine! That can only land you in dead orthodoxism. Pay more attention to pure life, and you will raise a growth of genuine Christianity.' That is exactly like saying to a farmer: 'Do not worry forever about good seed; worry about good fruits.' Is not a farmer properly concerned about good fruit when he is solicitous about getting good seed? Just so a concern about pure doctrine is the proper concern about genuine Christianity and a sincere Christian life. False doctrine is noxious seed, sown by the enemy to produce a progeny of wickedness." - C.F.W. Walther, The Proper Distinction between Law and Gospel, pg. 20-21