John Gill Commentary Ezekiel 20:43

"And there shall ye remember your ways, and all your doings, wherein ye have polluted yourselves; and ye shall loathe yourselves in your own sight for all your evils that ye have committed." — Ezekiel 20:43 (ASV)

And there you shall remember your ways, and all your doings,
in which you have been defiled
Their rejection of the Messiah; their continued disbelief of him; their obstinacy, hardness, and impenitence; their adherence to the traditions of the elders, to the making void the word of God; together with the most flagrant immoralities that ever any people were guilty of, and which are of a very defiling nature, and made them abominable in the sight of God; these now the Spirit of God convincing them of, they will remember with shame and confusion, and mourn over them in an evangelical way; and the more so, when they shall find themselves reinstated in their own land, enjoying all civil and religious privileges and liberties under Christ their King, whom they will now know, own, and serve; see (Zechariah 12:10):

and you shall loath yourselves in your own sight for all your evils that
you have committed ;
against God and Christ; against the law of the one, and the Gospel of the other. Sin is a loathsome thing to God; and it is so to his people When they are thoroughly convinced of it, and they loath themselves for it; and never more so than when they have the greatest instances and clearest discoveries of the love and grace of God in Christ to them; then they blush, are ashamed of themselves and their sins, and are confounded when they perceive the Lord is pacified towards them, and their sins are forgiven for Christ's sake: sin never appears more odious and loathsome than when viewed in the glass of pardoning love; see (Ezra 9:6Ezra 9:8) (Ezekiel 16:63).