Charles H. Spurgeon on Psalms 119:78

Let the proud be ashamed, etc. Here is the just recompense of his pride. He would fain have honour and preeminence, but God will not give them unto him: he flies shame and contempt, but God shall pour them upon him. "For they dealt perversely with me without a cause." David complains of the wicked and false dealing of his enemies against him; and his prayer is written to uphold us in the like temptation. For Satan is alway like himself, hating them whom the Lord loveth. He can scarce be worse, lie can never be better; and therefore with restless malice stirs he up all his cursed instruments in whom he reigns, to persecute those who are loved and protected of the Lord. "But I will meditate in thy precepts." David's enemies fought against him with the weapons of the flesh, wickedness and falsehood: lie withstands them by the armour of the Spirit; not meeting wickedness with wickedness, and falsehood with falsehood. For if we fight against Satan with Satan's weapons he will soon overcome us; but if we put upon us the complete armour of God to resist him, he shall flee from us. William Cowper.