What does the Bible say about prayer from the heart?

True prayer is fundamentally from the heart, a theme heavily emphasized in Scripture. In 2 Samuel 7:27, David states that he found it in his heart to pray, illustrating that genuine prayer is not just about the words we utter but the condition of our hearts when we approach God. Similarly, Psalm 51 highlights the importance of a broken and contrite heart, which God will not despise. This indicates that prayer should reflect our true feelings, needs, and desires towards God rather than being a mere recitation of memorized phrases or formulaic expressions.