The Apostles were instructed to preach in pairs, not only to bolster their courage, as Blessed Theophylact elaborates, but also to fulfill the legal requirement that necessitated two witnesses to authenticate the truth (Deuteronomy 19:15). In His parting guidance, Jesus shared protocols for managing challenging situations they would encounter. Since the moment had not yet arrived to address the Gentiles, the Lord advised them to avoid even the pathways leading to their lands or entering Samaritan cities, directing them instead toward the strayed sheep of the house of Israel. Israel held the privileges of adoption, glory, covenants, the law, ministry, and promises (Rom. 9:4), being the first to receive the call into Christ's kingdom.
He commanded them to proclaim, “The kingdom of heaven is at hand; heal the sick, cleanse the lepers, raise the dead, cast out demons.” He sought to temper their arrogance and caution them against greed, teaching, “You give nothing of your own to those who receive you; you did not acquire these gifts as compensation for your efforts; they are My grace—therefore, offer them freely, as no price can adequately reflect their value.”