George Mueller emphasizes the unchangeable power of God, asserting that God's ability to perform miracles remains as strong today as it was in biblical times. He encourages believers not to doubt God's capacity to answer prayers and perform wonders, regardless of the era they live in. Mueller reminds us that while God may not always work miracles, He can achieve His purposes through ordinary means, and we should remain hopeful for great blessings. He illustrates this with the story of Peter's deliverance, highlighting that divine intervention is often tailored to our needs. Ultimately, Mueller calls on Christians to trust in God's enduring power and to expect His blessings in their lives.

But can He do miraculous things in the latter part of the nineteenth century? Yes, as well as He could in the middle of the first century. Let us never say this was in the days of the Apostles, and we cannot expect such things now. Quite true, that God does not commonly work miracles; but He can if He will, and let us give glory to His name, that if He does not work miracles it is because He can and does do His will by ordinary means. He can accomplish His ends in many ways. let us never lose heart in such circumstances; He has the same power as ever He had. Many think if they were living in the days of Elijah, or in the days of Elisha, or in the days of the Apostles, they would expect these things; but because they do not live in those days, but in the latter part of the nineteenth century, therefore they cannot expect to have such answers to prayer. This is wrong; remember, that God has the same power as in the days of the prophets of old, or of the Apostles of old; therefore let us only look for great blessings, and great blessings will be bestowed on us, my beloved friends in Christ. "They passed through one street, and forthwith the angel departed from him." This contains an important spiritual truth—it is this, that God does not work miracles when they are not needed. The angel was sent to deliver Peter from prison; but Peter was now in the streets, and he knew very well the streets of Jerusalem. He had been living there, and he knew all about them; and it was not, therefore, necessary that the angel should lead him through the streets, and bring him to the house where he was going. Therefore as soon as he was outside the prison, and no more supernatural help was required, the angel departed from him.