Luke's account does not include some details that Matthew and Mark recorded, but it stresses the immediacy of Jesus' healing. Luke did not introduce Peter to his readers, probably because they knew about him before reading this Gospel.
"Undoubtedly, the key disciple in Luke's writings is Peter. He was the representative disciple, as well as the leading apostle.170
Doctor Luke alone wrote that this was a high fever. He described Jesus as standing over Peter's mother-in-law as a doctor would, perhaps suggesting Jesus' role as the Great Physician. He also wrote that Jesus rebuked the fever. We need not infer that a demon had produced it and that Jesus was rebuking the demon. Luke may have just been personifying the fever to show the power of Jesus' words. Peter's mother-in-law's ability to serve others testified to the complete recovery that Jesus affected (cf. v. 35). Luke showed special interest in women in his Gospel, and this is another indication of that (cf. Elizabeth, Mary, Anna). He apparently wanted his Greek readers, who held women in esteem, to realize that Jesus honored them too.
Luke's emphasis in this healing was the miraculous element and Jesus' great power and authority over sickness.
