What does Psalm 30:10 mean?
David appeals to God for mercy, and for His aid. He was confident the Lord would forgive him and restore him to fellowship. David likely expressed sentiments like this when he asked for God's mercy after sinfully taking a census of Israel (1 Chronicles 21:7–17). In this psalm, David also notes that God's discipline of His people is temporary, while His love for them is eternal (Psalm 30:5).It is a great comfort and encouragement to know the Lord is the believer's helper. He is present always and in all circumstances to help His children. Hebrews 13:5 exhorts believers to be content with what they have. That contentment is rooted in knowing that God's presence is never ending, "for he has said, 'I will never leave you nor forsake you.' So we can confidently say, 'The Lord is my helper; I will not fear, what can man do to me?'" (Hebrews 13:5–6).
As a young shepherd, David learned to rely on the Lord as his helper. In Psalm 23:1 he writes: "The LORD is my shepherd; I shall not want." Even danger and dire circumstances didn't cause despair because David trusted in God's presence (Psalm 23:4). No trial or danger rises against a believer which must be encountered alone. The Lord, the believer's helper, is alongside to carry him through to victory.