“Heal the sick, cleanse the lepers, raise the dead, cast out devils: freely ye have received, freely give.”
Heal the sick, raise the dead, cleanse lepers, cast out demons. You received without paying; give without pay. The comprehensive authority extends to the comprehensive mission: the same four categories of restoration that appear in chapters 8–9 (healing, raising, cleansing lepers, exorcism) are delegated to the disciples. The raise the dead — included in the commission before Jesus has publicly raised the dead — anticipates the scope of the authority that is being delegated. You received without paying; give without pay is the kingdom economy of grace: the gospel that was received as a gift is to be transmitted as a gift. 2 Corinthians 11:7 records Paul's commitment to proclaiming the gospel free of charge.
Church Fathers on Matthew 10:8
Because the manifestation of the Spirit, as the Apostle speaks, is given for the profit of the Church, after bestowing His power on the Apostles, He sends them that they may exercise this power for the good of others; 'These twelve Jesus sent forth.'
Observe the propriety of the time in which they are sent. After they had seen the dead raised, the sea rebuked, and other like wonders, and had both in word and deed sufficient proof of His excellent power, then He sends them.
This passage does not contradict the command which He gave afterwards, 'Go and teach all nations;' for this was before His resurrection, that was after. And it behoved the coming of Christ to be preached to the Jews first, that they might not have any just plea, or say that they were rejected of the Lord, who sent the Apostles to the Gentiles and Samaritans.