If one does not repent, God will sharpen His sword; He has bent and strung His bow.
PSALM 7 David, loaded with unjust calumny, calls upon God to be his advocate and defender, and commits his innocence to the Divine protection. In the first place, he protests that his conscience did notaccuse him of the wickedness laid to his charge. Secondly, he shows how greatly it concerns the glory of God that he should execute judgment against the ungodly.
Commenting on Psalm 7:1-17
"If he turn not, he will whet his sword." What blows are those which will be dealt by that long uplifted arm! God's sword has been sharpening upon the revolving stone of our daily wickedness, and if we will not repent, it will speedily cut us in pieces. Turn or burn is the sinner's only alternative. "He hath bent his bow and made it ready."
David having lodged his appeal with God by prayer and a solemn profession of his integrity, in the former part of the psalm, in this latter part does, as it were, take out judgment upon the appeal, by faith in the word of God, and the assurance it gives of the happiness and safety of the righteous and the certain destruction of wicked people that continue impenitent. I.
Commenting on Psalm 7:10-17