Isaiah 1:17
15 When you spread out your hands in prayer, I look the other way; when you offer your many prayers, I do not listen because your hands are covered with blood. 16 Wash! Cleanse yourselves! Remove your sinful deeds from my sight. Stop sinning. 17 Learn to do what is right. Promote justice. Give the oppressed reason to celebrate. Take up the cause of the orphan. Defend the rights of the widow. 18 “Come, let’s consider your options,” says the Lord. “Though your sins have stained you like the color red, you can become white like snow; though they are as easy to see as the color scarlet, you can become white like wool. 19 If you have a willing attitude and obey, then you will again eat the good crops of the land.
Psalm 72:12
10 The kings of Tarshish and the coastlands will offer gifts; the kings of Sheba and Seba will bring tribute. 11 All kings will bow down to him; all nations will serve him. 12 For he will rescue the needy when they cry out for help, and the oppressed who have no defender. 13 He will take pity on the poor and needy; the lives of the needy he will save. 14 From harm and violence he will defend them; he will value their lives. 15 May he live! May they offer him gold from Sheba. May they continually pray for him. May they pronounce blessings on him all day long.
Notes and References
"... Interpreters have long noted that the writer(s) of Isaiah share similar language, themes, and forms with the Psalmists. Isaiah’s style and contents are often lyric or psalm-like. The book of Isaiah even contains some complete psalms. Recent works have documented the extent of this convergence. Similar language appears in many Psalms and verses from Isaiah ... (Isaiah 2:8 / Psalm 115:4; Isaiah 5:5-6 / Psalm 80:12; Isaiah 12:1 / Psalm 9:1) ... Isaiah uses eschatological hymns of praise: 42:10-13; 44:23; 45:8; 49:13. J. Begrich compared these to the kingship and enthronement psalms: Psalms 93, 95-99. Creach cites parallels with the enthronement Psalms and Isaiah 40:10; 44:23; 49:13; 55:12 ..."
Watts, John D. W. Word Biblical Commentary: Isaiah 1-33 (p. cviii) Zondervan Academic, 2004