but whoever causes one of these little ones who believe in Me to stumble, it would be better for him to have a heavy millstone hung around his neck, and to be drowned in the depth of the sea. Matthew 18:6
Exactly.
Sin angers Him on general principle but this sin is especially hateful to Him and is expressly singled out for an exceptionally severe judgment.
Prov. 6; Matt. 18:6 and Luke 17:2