He sent them forth (apesteilen autous). First aorist active indicative of apostellō.
To preach the kingdom of God and to heal the sick (kērussein tēn basileian tou theou kai iāsthai). Present indicative for the continuous functions during this campaign. This double office of herald (kērussein) and healer (iāsthai) is stated directly in Mat 10:7-8. Note the verb iaomai for healing here, though therapeuein in Luk 9:1, apparently used interchangeably.