Christians believe that God is one but exists in three different 'persons'. God the Father, the Son and the Holy Spirit - and that these three Persons form a unity. The word Trinity comes from the word 'tri' meaning 'three' and 'unity' meaning 'one'.
God is fair and just(Psalm 25:8).
Christians can question why evil and suffering in the world still exists if God really is all-powerful, all-knowing and all-loving.
The idea that evil can exist alongside an all-loving God produces a problem for Christians. They have developed a few different solutions to this problem:
What does omniscience mean?
The word omniscience means all-knowing.