I am curious how Christianity as a whole, but more specifically, how do Christians, as individuals, view and solve (if possible) the Problem of Evil.
I have certainly wrestled with the concept from a philosophical standpoint. I am interested in how some Christians wrestle with it.
Holy (good, without any evil) created the whole creation. The whole creation was good when God created it.
Evil is just absence of good, like darkness is absence of light. You can say, evil is absence of God.
When God has created us, He gave us a free will to obey or reject Him. He told us the consequences of both obedience and disobedience. Humanity chose sin. Sin is absence of goodness and it separates us from the Holy God. Through sin, all the evil we see today, entered the world.
Because God is good, He must punish every evil, every sin. He can chose to punish it all immediately, or later, either way, all evil will be punished.
When we sinned, we died spiritually (separated from God) and began to die physically. Hell is a place where sinners go to suffer God's punishment for their sins. Eternal hell is the hardest part of the Bible for me, but it is just, sin must be punished.
God however does not desire us to go to hell, so He sent His Son who suffered and died on the cross, and was risen on the third day that who ever believes in Him should not perish, but have an everlasting life in Heaven. That does not mean the sins of believers will go unpunished, but every sin of every believer was punished on Jesus Christ on the cross. Jesus Christ dealt with every sin of every believer on the cross. He atoned, He fully paid for, and He reconciles you to God. This is where Christianity is different from every religion, because only in Christianity every sin gets punished. Only in Christianity you have a Saviour who pays the penalty for your sins, and atones for them. You do not have that anywhere else.
Jesus Christ is the only one who can forgive your sins, because He is the one who dealt with sin on the cross.
But one day, He will come back, and God will justly judge every human that ever existed, and every sin will be punished. Today, God in His love and mercy calls to you His Son. But this time of grace is coming to an end, because good God must punish every evil.