a knee · noun, common feminine dual construct + pronominal suffix
weak
כָּשְׁל֣וּka.she.Lu
H3782
to totter or waver (through weakness of the legs · verb, qal perfect, 3rd person common plural
fasting
מִצּ֑וֹםmi.Tzom
H6685
a fast · preposition + noun, common masculine singular absolute
flesh
וּ֝בְשָׂרִ֗יu.ve.sa.Ri
H1320
flesh (from its freshness) · conjunction + noun, common masculine singular construct + pronominal suffix
faileth
כָּחַ֥שׁka.Chash
H3584
to be untrue · verb, qal perfect, 3rd person masculine singular
fatness
מִשָּֽׁמֶןmi.Sha.men
H8081
grease · preposition + noun, common masculine singular absolute
Strong's Exhaustive Concordance (James Strong, 1890/1894), public domain; digitized by Open Scriptures (CC BY-SA). KJV word tagging: eBible.org (public domain). Original-language text, parsing and brief lexicon: STEPBible.org data from Tyndale House, Cambridge (CC BY 4.0).
Cross-references
Psalms 22:14 I am poured out like water, and all my bones are out of joint: my heart is like wax; it is melted in the midst of my bowels.
Psalms 32:3-4 When I kept silence, my bones waxed old through my roaring all the day long.
Matthew 4:2 And when he had fasted forty days and forty nights, he was afterward an hungred.
Hebrews 12:12 Wherefore lift up the hands which hang down, and the feeble knees;
Job 19:20 My bone cleaveth to my skin and to my flesh, and I am escaped with the skin of my teeth.
Psalms 35:13-14 But as for me, when they were sick, my clothing was sackcloth: I humbled my soul with fasting; and my prayer returned into mine own bosom.
Psalms 38:5-8 My wounds stink and are corrupt because of my foolishness.
Psalms 69:10 When I wept, and chastened my soul with fasting, that was to my reproach.
Cross-references from OpenBible.info (CC BY), in the lineage of the Treasury of Scripture Knowledge (public domain).
Commentary
Matthew Henry on Psalms 109:21–end
David, having denounced God's wrath against his enemies, here takes God's comforts to himself, but in a very humble manner, and without boasting.
I. He pours out his complaint before God concerning the low condition he was in, which, probably, gave advantage to his enemies to insult over him: "I am poor and needy, and therefore a proper object of pity, and one that needs and craves thy help." 1. He was troubled in mind (Psa 109:22): My heart is wounded within me, not only broken with outward troubles, which sometimes prostrate and sink the spirits, but wounded with a sense of guilt; and a wounded spirit who can bear? who can heal? 2. He apprehended himself drawing near to his end: I am gone…
My knees are weak through fasting,..... Either voluntary or forced, through want of food or refreshment; this was verified in Christ, when he kneeled and prayed, and his sweat was as it were great drops of blood falling to the ground; see Psalm 69:10.
And my flesh faileth of fatness; or "for want of oil" (k); the radical moisture of his flesh being dried up like a potsherd, Psalm 22:15.
(k) , Sept. "propter oleum", V. L. "propter defectum olei", Eth. Arab.
John Calvin on Psalms 109:21-27
Psalm 109:21-27
21. And thou, O Jehovah my Lord! undertake for me, for thy name's sake; deliver me, because thy mercy is good; 22. Because I am poor and needy, and my heart is wounded within me. 23. I walk about as a shadow when it declineth. [313] I am tossed as the locust. [314] 24. My knees are become feeble through fasting; and my flesh faileth of fatness. 25. But I became a reproach to them; when they see me they shake their head. 26. Help me, O Jehovah my God! save me according to thy mercy: 27. And they shall know that this is thy hand, and that thou, O Jehovah! hast done it.
21 And thou, O Jehovah my Lord! From the pouring out of complaints and imprecations against his enemies, the…
"I became also a reproach unto them" [Psalm 109:24]: through the death of the Cross. "For Christ has redeemed us from the curse of the law, being made a curse for us." [Galatians 3:13] "They looked upon Me, and shaked their heads." Because they beheld His crucifixion, without beholding His resurrection: they saw when His knees were weakened, they saw not when His flesh was changed.
And thus also thou canst shew that all the righteous men and Prophets, either by their own will, or by God's command unto them, endured always tribulations and labours, even as the blessed David maketh known that from the severity of his fasting the very limbs of his body had become enfeebled, saying, "My knees have become sick through fasting, and my flesh faileth of fatness."
My knees are weakened from fasting. Take consolation, O monk, in fasting: since the Lord too did this. I say that when a monk fasts, he becomes stronger through fasting; and when his knees are weakened by fasting, then he is most of all strengthened. And my flesh is changed on account of oil. I seem to be saying a difficult thing, and I interpret it according to the letter, that I may edify my hearers: for even the letter edifies me. It is good to fast, it is good to flee from delicacies. Before I come to the spiritual understanding, I linger in the letter. He who says that he does not eat oil, is far from the rest of the delicacies. All this I have said, because he said, And my flesh is changed on account of oil. This I have interpreted otherwise. But what he says is this. Oil is an image of brightness; oil is, as it were, the food of light. So then the Jews too received oil from me, they received life, they received light. Let no one suppose that he says "oil" for mercy: in the Hebrew it signifies intelligible oil. It is changed not into joy, but into sadness; not that I might be found more beautiful, but that I might appear more disfigured. Therefore he says: "We saw him, and he had no beauty." Why? because his flesh was changed on account of oil. He had not the delights of the body, but of the spirit. And we too, then, when we fast, when our faces are pale, when we appear disfigured, let us recognize that we then appear more beautiful to Christ. Such soldiers Christ loves, who give themselves to fasting. Our provision and our food is fasting. Why? because in fasting is victory, and in victory is triumph. In short, the apostle too glories not in fullness, but in weakness. "For when I am weak, then I am stronger."
Dictionary and topics
Fasting · Of Saints Exemplified: David — Of Saints Exemplified: David
Dictionary: Easton's (1897) and Smith's (1863), public domain. Topics: Nave's Topical Bible (1896) and Torrey's Topical Textbook (1897), public domain. Both as parsed by NEUU (CC BY 4.0).
on Psalms 109:21-25
The thunder and lightning are now as it were followed by a shower of tears of deep sorrowful complaint. Ps 109 here just as strikingly accords with Ps 69, as Ps 69 does with Ps 22 in the last strophe but one. The twofold name Jahve Adonaj (vid., Symbolae, p. 16) corresponds to the deep-breathed complaint. עשׂה אתּי, deal with me, i.e., succouring me, does not greatly differ from לי in Sa1 14:6. The confirmation, Psa 109:21, runs like Psa 69:17 : Thy loving-kindness is טּוב, absolutely good, the ground of everything that is good and the end of all evil. Hitzig conjectures, as in Psa 69:17, חסדך כּטוב, "according to the goodness of Thy loving-kindness;" but this formula is without example: "fo…
A shadow at dusk suggests a transitory, empty existence (102:11; 144:4); a single locust could easily be brushed off one’s clothing.
Spurgeon's Treasury of David on Psalms 109:24
My knees are weak through fasting; and my flesh faileth of fatness.
My knees are weak through fasting; either religious fasting, to which he resorted in the dire extremity of his grief, or else through loss of appetite occasioned by distress of mind. Who can eat when every morsel is soured by envy? This is the advantage of the slanderer, that he feels nothing himself, while his sensitive victim can scarcely eat a morsel of bread because of his sensitiveness. However, the good God knoweth all this, and will succour his afflicted. The Lord who bids us confirm the feeble knees will assuredly do it himself. "And my flesh faileth of fatness." He was wasted to a skeleton, and as his body was emac…