The Law says to have love for the orphan and the widow. It says in the Law: Exodus 22,21-23 | Deuteronomy 14,28-29 | Deuteronomy 16,11 | Deuteronomy 24,17-21 | Deuteronomy 26,12-13 | Deuteronomy 27,19 | Isaiah 1,17.
The duty to love and help widows and orphans is recalled several times in Maria Valtorta's work, for example in EMV 229.3 and EMV 557.6.
The Exodus prescription is quoted verbatim in EMV 335.14.
Book of Exodus 22, 21-23
Ex 22, 21-23 : You shall not afflict the widow or the orphan. If you afflict them, they will cry out to me, and I will hear their cry; my anger will be kindled, and I will destroy you with the sword, and your wives will be widows and your children orphans.
Book of Deuteronomy 14, 28-29
Deut 14:28-29: At the end of every third year, you shall set apart all the tithe of your produce of that year, and lay it up within your gates. Then shall come the Levite, who has no portion or inheritance with you, and the stranger, the fatherless and the widow, who shall be within your gates, and they shall eat and be satisfied, that Yahweh your God may bless you in all the works that you undertake with your hands.
Book of Deuteronomy 16, 11
Dt 16, 11 : You shall rejoice before Yahweh your God, in the place which Yahweh your God has chosen to make his name dwell there, you, your son and your daughter, your man-servant and your maid-servant, the Levite within your gates, and the stranger, the orphan and the widow among you.
Deuteronomy 26, 12-13
Deut 26:12-13: When you have finished tithing all the tithe of your produce ▼ in the third year, the tithe year, and give it to the Levite, the stranger, the orphan and the widow, to eat within your gates and be satisfied, you shall say before Yahweh your God: "I have taken away from my house that which is holy, and have given it to the Levite, the stranger, the fatherless and the widow, according to all your precepts which you gave me; I have not transgressed or forgotten any of your precepts.
Book of Deuteronomy 27, 19
Dt 27, 19 : Cursed be he who violates the rights of the stranger, the orphan and the widow! - And all the people will say: Amen!
Book of Isaiah, 1, 17
Is 1, 17 : Learnto do right; seek justice, set right the oppressor, vindicate the orphan, defend the widow.