The world needs peace. It requires people who are filled with peace in their hearts. If you are filled with anger, hatred, bitterness, revenge, can there ever be peace? Never. The earth will become filled with violence.
God sent Jesus to bring us the peace we desperately need. A peace that passeth all human understanding. This peace comes from the Holy Spirit, filling our hearts, giving us the rest to face trials and overcome temptations.
Follow peace with all men, and holiness, without which no man shall see the Lord: Hebrews 12:14
God desires we walk in peace with ALL men. Peace cannot be preserved without Holiness. A peaceful person pursues holiness too.
The word of God is clear, if you call yourself a Christian and lack these two natures, Heaven will never accept you. Repent, turn to God, obey His word and get your life in order.