It appears that Matthew (ironically, a former tax collector and very likely formerly greedy and a swindler) ties together this chapter, filled with hard sayings, with these final words of promise and comfort for those who believe. The promise? Nothing about this world, but all about the next. A hundred-fold gift from God and the right to rule with him. This, of course, was in response to the call for sexual purity and material fidelity and the disposal of materialism and abandoning all – even our most precious relationships and, if need be – all for God.

Matthew 19:27-30