What does the Bible say about troubles of the heart?

Psalm 25:17 shows that even the faithful, like David, face troubles that can grow in intensity. While we might expect that a life of trust in God would be free from heartache, the reality is that troubles can enlarge and afflict the soul. David asks the Lord to bring him out of his distresses, illustrating that in times of trouble, turning to God is essential. This reflects the truth that God is a refuge for those burdened with grief and anxiety, and He is aware of our deepest struggles.