What does the Bible say about a father's love?

Scripture vividly depicts the profound love of a father in 2 Samuel 18, where King David mourns for his son Absalom despite his son's rebellion. David's heartache, expressed in his lament, 'O my son Absalom, my son, my son Absalom! Would God I had died for thee,' showcases the unconditional nature of a father's love. This narrative emphasizes that a father's love persists even amidst conflict, reflecting God’s ultimate love for His children who are lost in sin. David's singular interest, primarily concerned about his son's well-being rather than the justice surrounding Absalom's death, acts as a poignant reminder of God's enduring desire for reconciliation with His wayward children.