God is love. God is Justice. God is holiness. God is unwavering. God is mercy. Think of the quality of Jesus as being peace, and offering peace as He left us in person.
"Peace I leave with you; my peace I give to you. Not as the world gives do I give to you. Let not your hearts be troubled, neither let them be afraid." (John 14:27)
Not man-made peace which doesn't last. That kind of peace is fleeting, as when someone offers you a raise, or pays your debt, or after a refreshing nap, or when a project is completed or a meal is good. That kind of peace is surface, shallow peace.
That kind of peace can be disrupted by mundane and ridiculous things. A car horn, a baby's cry, a shove in line, traffic, a missed deadline. Peace that is man-made can also be taken away by man.
The peace that Jesus gives us is a permanent peace. It drenches every molecule of us with its truth and comfort. As Charles Spurgeon wrote in his sermon on the John 14:27 verse, titled, Spiritual Peace,
"The donation, the blessed legacy which our Lord has here left, is his peace."... There is a peace of God which reigns in our hearts through Jesus Christ, by which we are bound in closest ties of unity and concord to every other child of God whom we may meet with in our pilgrimage here below."
"Our peace then, is God's own child, and God-like is its character. His Spirit is its sire, and it is like its Father. It is "my peace," saith Christ! not man's peace; but the unruffled, calm, the profound peace of the Eternal Son of God. Oh, if we had but this one thing within our bosoms, this divine peace, a Christian were a glorious thing indeed; and even now kings and mighty men of this world are as nothing when once compared with the Christian; for he wears a jewel in his bosom which all the world could not buy, a jewel fashioned from old eternity and ordained by sovereign grace to be the high boon, the right royal inheritance of the chosen sons of God."