12:18 Then the {e} spirit came upon Amasai, [who was] chief of the captains, [and he said], Thine [are we], David, and on thy side, thou son of Jesse: peace, peace [be] unto thee, and peace [be] to thine helpers; for thy God helpeth thee. Then David received them, and made them captains of the band.
(e) The spirit of boldness and courage moved him to speak thus.
12:18 The Spirit - Not only saving graces, but other heroical and generous motions are ascribed to God's spirit, which here stirred up in him a more that ordinary greatness of mind and resolution.
12:1-22 Here is an account of those who appeared and acted as David's friends, while he was persecuted. No difficulties or dangers should keep the sinner from coming to the Savior, nor drive the believer from the path of duty. Those who break through, and overcome in these attempts, will find abundant recompence. From the words of Amasai we may learn how to testify our affection and allegiance to the Lord Jesus; his we must be throughly; on his side we must be forward to appear and act. If we are under the influence of the Spirit, we shall desire to have our lot among them, and to declare ourselves on their side; if in faith and love we embrace the cause of Christ, he will receive, employ, and advance us.
