Psalm 9
The psalm is a psalm of praise.The introduction has “to the tune of “The death of the Son”, it does not indicate whether David has just suffered loss, whatever the case, David responds by praising the Lord. David declares that He will give thanks to the Lord, with his whole heart, and tell of God’s wonderful deeds. He will rejoice in the Lord and sing praises to Him. This is what we should always do. Sometimes it will be very difficult to do so, but we should persist.
Things can seem bad, but God has never forgotten us, So in v3 David says his enemies turn back, stumble and perish. God has upheld his cause, God has brought forth justice, He has taken action.
“The Lord reigns forever, evil does not reign forever, our enemies do not reign forever. God is a refuge for His people, so we should seek him out when it is all so difficult.
V13 makes it clear that David is fully aware of the difficulties, yet still calls upon the Lord. He calls on the Lord to act. We should follow the line that David takes.