Charles H. Spurgeon on Psalms 119:75

I know, O LORD, that thy judgments are right. He who would learn most must be thankful for what he already knows, and be willing to confess it to the glory of God. The Psalmist had been sorely tried, but he had continued to hope in God under his trial, and now he avows his conviction that be had been justly and wisely chastened. This he not only thought but knew, so that he was positive about it, and spoke without a moment's hesitation. Saints are sure about the rightness of their troubles, even when they cannot see the intent of them. It made the godly glad to hear David say this,

And that thou in faithfulness hast afflicted me. Because love required severity, therefore the Lord exercised it. It was not because God was unfaithful that the believer found himself in a sore strait, but for just the opposite reason: it was the faithfulness of God to his covenant which brought the chosen one under the rod. It might not be needful that others should be tried just then; but it was necessary to the Psalmist, and therefore the Lord did not withhold the blessing. Our heavenly Father is no Eli: he will not suffer his children to sin without rebuke, his love is too intense for that. The man who makes the confession of this verse is already progressing in the school of grace, and is learning the commandments. This third verse of the section corresponds to the third of Teth (67), and in a degree to several other verses which make the thirds in their octaves.