Psalms 55:10-20

10 Day and night they go about it upon the walls thereof: Iniquity also and mischief are in the midst of it.
11 Wickedness is in the midst thereof: Oppression and guile depart not from its streets.
12 For it was not an enemy that reproached me; Then I could have borne it: Neither was it he that hated me that did magnify himself against me; Then I would have hid myself from him:
13 But it was thou, a man mine equal, My companion, and my familiar friend.
14 We took sweet counsel together; We walked in the house of God with the throng.
15 Let death come suddenly upon them, Let them go down alive into Sheol; For wickedness is in their dwelling, in the midst of them.
16 As for me, I will call upon God; And Jehovah will save me.
17 Evening, and morning, and at noonday, will I complain, and moan; And he will hear my voice.
18 He hath redeemed my soul in peace from the battle that was against me; For they were many [that strove] with me.
19 God will hear, and answer them, Even he that abideth of old, [Selah [The men] who have no changes, And who fear not God.
20 He hath put forth his hands against such as were at peace with him: He hath profaned his covenant.

Psalms 55:10-20 Meaning and Commentary

To the chief Musician on Neginoth, Maschil [A Psalm] of David. The occasion of this psalm was either the persecution of Saul, or the conspiracy of Absalom. Some think it was written when David understood that the inhabitants of Keilah would deliver him into the hands of Saul, 1 Samuel 23:12; and others when the Ziphites attempted a second time to do the same, 1 Samuel 26:1; but since a single person is spoken of that magnified himself against him, Psalm 55:12; and Ahithophel seems to be designed; it may be thought rather to be written on account of Absalom's rebellion, and Ahithophel's counsel against him; who is considered by many Christian interpreters as a type of Judas, the betrayer of our Lord; and, indeed, there are many things in this psalm, if not the whole, which may be truly applied to Christ, as will be seen in the following exposition of it.
The American Standard Version is in the public domain.