28 Then Peter began to say to Him, "See, we have left all and followed You." 29 So Jesus answered and said, "Assuredly, I say to you, there is no one who has left house or brothers or sisters or father or mother or wife or children or lands, for My sake and the gospel's, 30 who shall not receive a hundredfold now in this time--houses and brothers and sisters and mothers and children and lands, with persecutions--and in the age to come, eternal life.
Matthew Henry's Commentary on Mark 10:28-30
Commentary on Mark 10:23-31
(Read Mark 10:23-31)
Christ took this occasion to speak to his disciples about the difficulty of the salvation of those who have abundance of this world. Those who thus eagerly seek the wealth of the world, will never rightly prize Christ and his grace. Also, as to the greatness of the salvation of those who have but little of this world, and leave it for Christ. The greatest trial of a good man's constancy is, when love to Jesus calls him to give up love to friends and relatives. Even when gainers by Christ, let them still expect to suffer for him, till they reach heaven. Let us learn contentment in a low state, and to watch against the love of riches in a high one. Let us pray to be enabled to part with all, if required, in Christ's service, and to use all we are allowed to keep in his service.