“Religion that is pure and undefiled before God, the Father, is this: to visit orphans and widows in their affliction" James 1:27

the visiting of the widows and the fatherless in their affliction is a manifestation of compassionate love; yet it is to be observed that elsewhere in the Holy Scriptures compassion is adduced as the most direct proof of love.
I do more than say in passing that ‘visiting’ means more than calling on - namely, looking after and caring for.
“Inasmuch as ye have done it unto one of the least of these, my brethren, ye have done it unto me” (Matthew 25:40).
A father to the fatherless, a defender of widows, is God in his holy dwelling. Psalm 68:5
“Do not take advantage of the widow or the fatherless. If you do and they cry out to me, I will certainly hear their cry. My anger will be aroused, and I will kill you with the sword; your wives will become widows and your children fatherless. Exodus 22:22-24