God is not so limited in his resources of power that if one little human hand somewhere fails to do its appointed duty his great cause will be defeated. He has large plans, in which the humblest of us have our own allotted place and part. But there is no compulsion brought to bear upon us. We can refuse to do our little piece of work if we choose. God's plan will then go on without us, and other hands will do what we refuse to do. The only effect of our failure in the duty assigned us will be in ourselves. Our own hearts will be hurt by our failure in duty, and we shall be set aside, missing the honour and blessing which would have been ours had we done our part.
Matthew 25:24-28: Then he which had received the one talent came and said, Lord, I knew thee that thou art an hard man, reaping where thou hast not sown, and gathering where thou hast not strawed: And I was afraid, and went and hid thy talent in the earth: lo, there thou hast that is thine. His lord answered and said unto him, Thou wicked and slothful servant, thou knewest that I reap where I sowed not, and gather where I have not strawed: Thou oughtest therefore to have put my money to the exchangers, and then at my coming I should have received mine own with usury. Take therefore the talent from him, and give it unto him which hath ten talents. (KJV)
Ephesians 2:10: For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them. (KJV)
Luke 17:10: So likewise ye, when ye shall have done all those things which are commanded you, say, We are unprofitable servants: we have done that which was our duty to do. (KJV)
1 Corinthians 9:24-27: Know ye not that they which run in a race run all, but one receiveth the prize? So run, that ye may obtain. And every man that striveth for the mastery is temperate in all things. Now they do it to obtain a corruptible crown; but we an incorruptible. I therefore so run, not as uncertainly; so fight I, not as one that beateth the air: But I keep under my body, and bring it into subjection: lest that by any means, when I have preached to others, I myself should be a castaway. (KJV)
Revelation 3:11: Behold, I come quickly: hold that fast which thou hast, that no man take thy crown. (KJV)