Greek, “For even”: “for also”; introducing an additional solemn incentive to diligence. Quoted from Deu 4:24.
our God - in whom we hope, is also to be feared. He is love (1Jo 4:8, 1Jo 4:16); yet there is another side of His character; God has wrath against sin (Heb 10:27, Heb 10:31).