Jesus instilled His despondent disciples with courage in that night by giving them a great and sure promise. He said: "Truly, truly, I say to you, He that believes on Me, the works that I do he shall do also; and greater works than these he shall do, because I go to my Father. And whatever you shall ask in my name, that I will do, that the Father may be glorified in the Son. If you shall ask anything in My name, I will do it." (John 14:12-14.) Through faith in Him His disciples were to be men of God's power on earth. They were to do the works that He had done, and greater still. For while Jesus preached, and did signs and wonders, and brought people to faith in Him in only a small nook of the earth, they were to go into all the world, and preach the Gospel, and do signs and wonders, and bring many more people to faith in Him than He had done Himself! And such power He would give them when through suffering and death He would enter into the glory of His Father. And if they would pray in His name, trusting in Him and firmly believing His promise, they would always be endowed with such power - by Him, in order that the Father might be properly known and glorified in Him, in whom alone the Father is truly revealed and made known to mankind. And again the Lord assured them: "If you shall ask anything in My name, I will do it."
          How is it with us who also believe in Jesus? Does this promise also pertain to us? Most certainly. True, He has not commanded us to do signs and wonders. But we are to do the greatest of all things, we are to bring men to saving faith in Him through the Gospel. And for such power of God we are to pray, and He will surely grant it to us. This is certain. Oh, that we had the true zeal for such work! Oh that believingly and earnestly we would pray for such power! How much we would then accomplish!