Iniquities prevail against me - This is no just rendering of the original, דברי עונת גברו מני dibrey avonoth gaberu menni; "iniguitous words have prevailed against me," or, "The words of iniquity are strong against me." All kinds of calumnies, lies, and slanders have been propagated, to shake my confidence, and ruin my credit.

Our transgressions, thou shalt purge them away - Whatsoever offenses we have committed against thee, thou wilt pardon; תכפרם tecapperem, thou wilt make atonement for them, when with hearty repentance and true faith we turn unto thee. This verse has been abused to favor Antinomian licentiousness. The true and correct translation of the former clause will prevent this.

The old Scottish Version of this verse, in their singing Psalms, is most execrable: -

"Iniquities, I must confess,

Prevail against me do:

And as for our trans-gres-sions

Them purge away wilt thou."

O David, if thou art capable of hearing such abominable doggerel substituted for the nervous words thou didst compose by the inspiration of the Holy Ghost, what must thou feel, if chagrin can affect the inhabitants of heaven!

Iniquities [heb.] words or matters of iniquities
prevail

Psalm 38:4 For my iniquities are gone over my head: as an heavy burden they are too heavy for me.

Psalm 40:12 For innumerable evils have compassed me about: my iniquities have taken hold on me, so that I am not able to look up...

2 Samuel 12:7-13 And Nathan said to David, You are the man. Thus said the LORD God of Israel, I anointed you king over Israel...

Micah 7:8,9 Rejoice not against me, O my enemy: when I fall, I shall arise; when I sit in darkness, the LORD shall be a light to me...

Romans 7:23-25 But I see another law in my members, warring against the law of my mind...

Galatians 5:17 For the flesh lusts against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other...

transgressions

Psalm 51:2,3,7 Wash me thoroughly from my iniquity, and cleanse me from my sin...

Psalm 79:9 Help us, O God of our salvation, for the glory of your name: and deliver us, and purge away our sins, for your name's sake.

Isaiah 1:18,19 Come now, and let us reason together, said the LORD: though your sins be as scarlet, they shall be as white as snow...

Isaiah 6:7 And he laid it on my mouth, and said, See, this has touched your lips; and your iniquity is taken away, and your sin purged.

Zechariah 13:1 In that day there shall be a fountain opened to the house of David and to the inhabitants of Jerusalem for sin and for uncleanness.

John 1:29 The next day John sees Jesus coming to him, and said, Behold the Lamb of God, which takes away the sin of the world.

Hebrews 9:14 How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God...

1 John 1:7-9 But if we walk in the light, as he is in the light, we have fellowship one with another...

Revelation 1:5 And from Jesus Christ, who is the faithful witness, and the first begotten of the dead, and the prince of the kings of the earth...

Prayer, Praise and Thanksgiving
"Dr. A. J. Gordon describes the impression made upon his mind by intercourse with Joseph Rabinowitz, whom Dr. Delitzsch considered the most remarkable Jewish convert since Saul of Tarsus: We shall not soon forget the radiance that would come into his face as he expounded the Messianic psalms at our morning or evening worship, and how, as here and there he caught a glimpse of the suffering or glorified Christ, he would suddenly lift his hands and his eyes to heaven in a burst of adoration, exclaiming …
Edward M. Bounds—The Essentials of Prayer

Religion Pleasant to the Religious.
"O taste and see how gracious the Lord is; blessed is the man that trusteth in Him."--Psalm xxxiv. 8. You see by these words what love Almighty God has towards us, and what claims He has upon our love. He is the Most High, and All-Holy. He inhabiteth eternity: we are but worms compared with Him. He would not be less happy though He had never created us; He would not be less happy though we were all blotted out again from creation. But He is the God of love; He brought us all into existence, …
John Henry Newman—Parochial and Plain Sermons, Vol. VII

The Sovereignty of God in Operation
"For of Him, and through Him, and to Him, are all things: to whom be the glory for ever. Amen" (Romans 11:36). Has God foreordained everything that comes to pass? Has He decreed that what is, was to have been? In the final analysis this is only another way of asking, Is God now governing the world and everyone and everything in it? If God is governing the world then is He governing it according to a definite purpose, or aimlessly and at random? If He is governing it according to some purpose, then …
Arthur W. Pink—The Sovereignty of God