The case of a Christian acting without knowing the will of God should never exist. The only rule that can be given is never to act when we do not know what is the Lord’s will. If you act in this ignorance, you are at the mercy of circumstances. However, God may turn all to the good of His children. But why act when we are ignorant of His will? Is the necessity of acting always so extremely pressing?
J. N. Darby (from Gems From My Reading)