For the man on whom this sign of healing was performed was more than forty years old.
We have here the issue of the trial of Peter and John before the council. They came off now with flying colours, because they must be trained up to sufferings by degrees, and by less trials be prepared for greater. They now but run with the footmen; hereafter we shall have them contending with horses, Jer 12:5. I.
Commenting on Acts 4:15-22
For the man was above forty years old,.... So that the miracle was the greater, that a man born lame, and who had been so above forty years, should have a cure; and he was the more known to the people, and his testimony met with more credit: on whom this miracle of healing was showed; both for the good of men, for the glory...
Verse 22. For the man, etc. The age of the man is mentioned to show the certainty and greatness of the miracle. If it had been a man who had been lame but a few years, or if it had been a child or a very young man, the case would not have been so remarkable.