God is LOVING. But God is also JUST (fair)
On one hand, God loves us and doesn’t not want to punish us; but on the other hand, God is just and must punish sin.
“God is love”
(1 John 4:8b)
“(He) will by no means clear the guilty”
(Exodus 34:7b KJV)
Do you see the problem?
God solved this problem by sending His son Jesus