What is the Trinity, and how can God be three in one?
The Trinity is the Christian belief that there is only one God, who exists as three distinct, co-equal, and eternal persons: God the Father, God the Son (Jesus Christ), and God the Holy Spirit. They are not three gods, but one God in three persons.
If God is all-loving, why does He send people to hell?
The Bible teaches that God, in His perfect love and justice, does not actively "send" people to hell. Instead, hell is the natural and tragic consequence for those who have chosen to reject God's free gift of salvation through Jesus Christ.
Why does God allow suffering and evil?
God allows suffering and evil to exist in the world primarily because He has given humanity the gift of free will. He did not create suffering, but it is a consequence of humanity's choice to turn away from Him.