"For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlanding life."
GOD CAME TO EARTH
God is the strongest, most powerful person there is. He has control over everything. He can make anything or anybody do whatever He wants. But God is also love. He wanted somoene He could love. That's why He made people. He wanted to show His love to them.
God lets people have the choice of loving and abeying Him or hating and disobeying Him. Gods' Son, Jesus Christ, came to earth Himself as a person. The Lord Jesus explained God's love to men. He let men who hated Him kill Him so that He could take our punishement for sin. Three days after He died He came back to life. Then He went to heaven to get it ready for the people who love Him.