How do we know the promise of peace in John 14:27 is true?

In John 14:27, Jesus states, 'Peace I leave with you; my peace I give you. I do not give to you as the world gives.' This assertion of peace is rooted in the finished work of Christ, which secures a profound and lasting peace, distinct from worldly peace that is fleeting and subject to circumstances. The promise is affirmed by the indwelling of the Holy Spirit, who assures believers of Christ's presence and peace in their lives, even amidst trials. This peace is eternal and stems from being in relationship with Christ, the Father, and the Holy Spirit.