Book of Psalms - commentary - interpretation - meaning.
The Book of Psalms is a collection of 150 songs, prayers, and hymns that reflect deep emotions and spiritual experiences. The Psalms are attributed to various authors, including King David, and cover a wide range of topics, from praise for God to laments and requests for help. The Psalms contain a wealth of poetic images and metaphors.

Psalm 139
interpretation - meaning - commentary - explanation
Psalm 139 is so rich that many articles could be written on various topics based on it. This psalm is divided into four parts.
Part One - God's omniscience, wisdom knows no bounds
For the music director. A Psalm of David.
(1) O lord, thou hast searched me, and known me.
(2) Thou knowest my downsitting and mine uprising, thou understandest my thought afar off.

Psalm 82, A Plea for Justice
interpretation - meaning - commentary - explanation
A Psalm of Asaph.
(1) God standeth in the congregation of the mighty; he judgeth among the gods.
The psalm refers to the time of the Last Judgment. God (Jesus) will judge those who are not written in the Book of Life. Who are these gods? These include unjust earthly judges, false prophets, cruel kings, sell-out politicians, rich men who value money more than human life, and others who have great influence over the fate of people (since many psalms are translated ambiguously, i.e., they refer to both David and Jesus or some event in the future this particular case may also be about the Israelites). All of them, instead of performing well in office, contributed to the downfall of society by their conduct. Because of their position, which placed them above ordinary people, they were called gods.

Psalm 51, Giving thanks to God for rescue from oppression
interpretation - meaning - commentary - explanation
A Prayer of Repentance. To the Chief Musician. A Psalm of David when Nathan the prophet went to him, after he had gone in to Bathsheba.
A psalm written by David after the prophet Natan admonished him about his shameful deed of adultery with Bathsheba and the devious plan by which her husband Uriah was killed along with other warriors.
(1) Have mercy upon me, O God, according to thy lovingkindness: according unto the multitude of thy tender mercies blot out my transgressions. (2) Wash me throughly from mine iniquity, and cleanse me from my sin. (3) For I acknowledge my transgressions: and my sin is ever before me.