What does the Bible say about comfort for troubled hearts?

In John 14:1-3, Jesus comforts His disciples during a time of great sorrow, urging them not to let their hearts be troubled. He reassures them by stating, 'You believe in God; believe also in me.' This call to faith in Jesus is a central theme in sovereign grace theology, where trust in Christ is the foundation for peace amidst turmoil. The passage emphasizes that in His Father's house are many rooms, indicating a place of rest and security for all believers, highlighting both the tenderness of Christ and the eternal hope we have as His people.