Then Peter began to say unto him, Lo, we have left all, and have followed thee.
Jesus Christ is a Man come to save men. In Him the divine nature is married to our human nature, and wherever human nature exists there is the raw material out of which He makes followers and saints!
Our Lord recognizes no classes, high or low, rich or poor, old or young, man or woman: all are human and all are alike to Him. His invitation is to all mankind.
In New Testament times persons from many and varied social levels heard His call and responded: Peter the fisherman; Levi the publican; Luke the physician; Paul the scholar; Mary the demon possessed; Lydia the businesswoman; Paulus the statesman. A few great and many common persons came. They all came and our Lord received them all in the same way and on the same terms.
In those early Galilean days Christ’s followers heard His call, forsook the old life, attached themselves to Him, began to obey His teachings and joined themselves to His band of disciples. This total commitment was their confirmation of faith. Nothing less would do!
And it is not different today. From any and every profession or occupation men and women may come to Him if they will. He calls us to leave the old life and to begin the new. There must never be any vacuum, never any place of neutrality where the world cannot identify us as truly belonging to Him!
28 Verses 28–31 represent a new scene, but one that follows naturally from Jesus’ climactic pronouncement in v. 27. In contrast to the failure of the rich man to give up what he had and to follow Jesus, Peter points out that the disciples had given up everything to follow him. There is a certain ambiguity here. Although the passage positively contrasts the disciples’ willingness to give up everything with the rich man’s unwillingness to give up his wealth, Peter’s statement also carries a slight sense of self-righteous pride: “We have done more than he was willing to do!” Jesus’ response in vv. 29–30 also carries ambiguity: they will receive much in return for their sacrifice, including suffering and persecution! Matthew in the parallel passage reports Peter’s additional words: “What then will there be for us?” (19:27)—further evidence that the disciples (Peter being their spokesman) were still thinking of material values rather than in spiritual terms.
10:28 we have left everything. Peter noted that the 12 had done what the Lord had asked the rich young ruler to do (cf. v. 21) and had come to Him on His terms. Would that self-abandoning faith, Peter asked, qualify them for a place in the kingdom?
10:28 we have left everything. While salvation cannot be earned, allegiance to Christ entails surrendering to Him control of one’s life, including possessions and relationships.
 Tozer, A. W., & Smith, G. B. (2015). Evenings with tozer: daily devotional readings. Chicago, IL: Moody Publishers.
 Wessel, W. W., & Strauss, M. L. (2010). Mark. In T. Longman III & D. E. Garland (Eds.), The Expositor’s Bible Commentary: Matthew–Mark (Revised Edition) (Vol. 9, p. 868). Grand Rapids, MI: Zondervan.
 MacArthur, J. F., Jr. (2006). The MacArthur study Bible: New American Standard Bible. (Mk 10:28). Nashville, TN: Thomas Nelson Publishers.
 Sproul, R. C. (Ed.). (2015). The Reformation Study Bible: English Standard Version (2015 Edition) (p. 1757). Orlando, FL: Reformation Trust.