Charles H. Spurgeon on Psalms 119:16

I will delight myself, etc. He protested before that he had great delight in the testimonies of God: now he saith he will still delight in them. A man truly godly, the more good he doth, the more he desires, delights and resolves to do. Temporisers, on the contrary, who have but a show of godliness, and the love of it is not rooted in their heart, how soon are they weary of well doing! If they have done any small external duty of religion, they rest as if they were fully satisfied, and there needed no more good to be done by them. True religion is known by hungering and thirsting after righteousness, by perseverance in well doing, and an earnest desire to do more.

But to this he adds that he will not forget the word. The graces of the Spirit do every one fortify and strengthen another; for ye see meditation helps consideration. Who can consider of that whereof he thinks not? Consideration again breeds delectation; and as here ye see, delectation strengthens memory: because he delights in the word he will not forget the word; and memory again renews meditation. Thus every grace of the Spirit helps another; and by the contrary, one of them neglected, works a wonderful decay of the remnant. William Cowper.

Ver. 16 I will delight myself When righteousness, from a matter of constraint becomes a matter of choice, it instantly changes its whole nature, and rises to a higher moral rank than before. The same God whom it is impossible to move by law's authority, moves of his own proper and original inclination in the very path of the law's righteousness. And so, we, in proportion as we are like unto God, are alive to the virtues of that same law, to the terror of whose severities we are altogether dead. We are no longer under a schoolmaster; but obedience is changed from a thing of force into a thing of freeness. It is moulded to a higher state and character than before. We are not driven to it by the God of authority. We are drawn to it by the regards of a now willing heart to all moral and all spiritual excellence. Thomas Chalmers, 1780-1847.