When we make a sacrifice, we are giving up something in the present for sake of something else in the future, something we believe to be worth more than what we’re giving up. We reason inductively, based on experience, that a certain type of sacrifice (i.e., not eating dessert) will result in a certain type of payoff (our belt won’t dig so deeply into our belly). We also may make a particular sacrifice (not eating meat) by faith, without having seen fruit (our brother’s conscience not being ruined), based on our trust that God follows through on His Word.
Of course things are different for God Himself. But for our encouragement, consider Christ’s death on the cross. What did Christ hope to accomplish by His sacrifice?
Christ did not hope like we do when He laid down His life. Christ did not need faith similar to us for what might happen in the future. Christ secured the fulfillment of everything that He and His Father ever intended for His sacrifice.
No elect person will be lost, no, not one. No sin, however longstanding, however powerful, however tempting, however crippling, will remain in power over any Christian, not even one. No guilt, no weakness, no pain, no suffering, no loss, will define any of those for whom Christ died; not one promise will be left unfulfilled for eternity.
There is still timing to consider; not all the effects happen at once. But in Christ we are in the realm of waiting on the when, not in the realm of wondering if at all. He has not spared His only Son for us. He will give us all the rest. This is the power of the cross.