How do we know our hearts are revealed by Christ?

Our hearts are revealed by Christ as He discerns whether we truly trust Him or are merely seeking worldly fulfillment. In John 6, we see a multitude following Jesus, yet their true intentions are exposed when He states that He is the Bread of Life. Those who turn away demonstrate that their hearts were not set on Him, revealing their lack of true faith. In contrast, when Peter proclaims, 'Lord, to whom shall we go? Thou hast the words of eternal life,' it shows that those with a heart for Christ cannot turn away because they recognize Him as their only hope and salvation.