Midras Mazmur 92:2: Midrash Tanchuma, Pirkei DeRabbi Eliezer, Midrash Tanchuma Buber & Midrash Tehillim

Scripture states: This is the gate of the Lord, the righteous shall enter into it (Ps. 118:20). Who are the righteous ones that will enter? The faithful ones, as it is said: Open ye the gates, that the righteous nation that keepeth faithfulness may enter in (Isa. 26:2). This is the gate that the faithful enter, as it is said: It is a good thing to give thanks unto the Lord, and to sing praises unto Thy name, O Most High, to declare Thy loving-kindness in the morning (Ps. 92:2). What is written after that? For Thou hast made me glad. What makes us glad? It is the faith which our fathers professed in this world, which is all night, as it is written: And thy faithfulness in the night seasons (ibid., v. 3). And it is also written: But the righteous shall live by his faith (Hab. 2:4), and They are new every morning, great is thy faithfulness (Lam. 3:23).

"It is good to confess to the Lord" (ibid.). The first man said: Let all the generations learn from me, that whosoever sings and utters psalms to the name of the Most High, and confesses his transgressions in the court of justice and abandons (them), will be delivered from the judgment of Gehinnom, as it is said, "It is good to confess to the Lord" (ibid.).

"To declare thy loving-kindness in the morning" (Ps. 92:2). Adam said: (This refers to) all who enter this world which is like unto the night; and to all who come into the world to come, which is like unto the morning. They shall declare the faithfulness and love of the Holy One, blessed be He, which He has shown to me, (for He has) delivered me from the judgment of Gehinnom, as it is said, "To declare thy loving-kindness in the morning, and thy faithfulness every night" (ibid.).