Herod’s steward - Herod Antipas, who reigned in Galilee. He was a son of Herod the Great. The word “steward” means one who has charge of the domestic affairs of a family, to provide for it. This office was generally held by a “slave” who was esteemed the most faithful, and was often conferred as a reward of fidelity.
Ministered - Gave for his support.
Of their substance - Their property; their possessions. Christians then believed, when they professed to follow Christ, that it was proper to give “all” up to him - their property as well as their hearts; and the same thing is still required that is, to commit all that we have to his disposal; to be willing to part with it for the promotion of his glory, and to leave it when he calls us away from it.