Psalms 55:13

“But [it was] thou, etc.] The Targum is, “but thou Ahithophel”; of whom the words are literally to be understood, and so they are in the Talmud f720; and mystically and typically of Judas; a man mine equal; “a man”, and not a beast, nor a devil; but a man, from whom humanity, kindness, and tenderness might have been expected; though both Ahithophel and Judas acted the part of a devil; and the latter is expressly called one, (<430670>John 6:70); “mine equal”; or like unto me; as the Targum. Ahithophel was not equal to David in dignity, as the king of Israel; nor in gifts, as the sweet psalmist of Israel; nor in grace as he; but as a man, a mortal dying man: kings and subjects are of the same…”

“guide--literally, "friend" (Pro 16:28; Pro 17:9). acquaintance--in Hebrew, a yet more intimate associate.”

“But it was thou, a man mine equal - Margin, “a man according to my rank.” Septuagint, ἰσόψυχε isopsuche, equal-souled, like-souled, “second self” (Thompson); Vulgate, “unanimus,” of the same mind; Luther, “Geselle,” companion. The Hebrew word used here - ערך ‛êrek - means properly a row or pile, as of the showbread piled one loaf on another, Exodus 40:23; then it would naturally mean one of the same row or pile; of the same rank or condition. The word also means price, estimation, or value, Job 28:13; Leviticus 5:15, Leviticus 5:18; Leviticus 6:6. Here the expression may mean a man “according to my estimation, value, or price;” that is, of the same value as myself (Gesenius, Lexicon); or…”

“Equal - Not in power, but in reputation, for wisdom, and influence upon my people. Guide - Whose counsel I highly prized, and constantly followed. All which agrees to Achitophel. Psalms 55:15”

“a man mine equal: Heb. a man according to my rank my guide: Sa2 15:12, Sa2 16:23; Jer 9:4; Mic 7:5 mine acquaintance: Joh 19:13; Mat 26:47-50; Mar 14:44, Mar 14:45; Luk 22:21, Luk 22:47, Luk 22:48 Psalms 55:14”