Jamieson, Fausset & Brown

Continue--Greek, "Continue perseveringly," "persevere" (Eph 6:18), "watching thereunto"; here, "watch in the same," or "in it," that is, in prayer: watching against the indolence as to prayer, and in prayer, of our corrupt wills. with thanksgiving--for everything, whether joyful, or sorrowful, mercies temporal and spiritual, national, family, and individual (Co1 14:17; Phi 4:6; Th1 5:18).