8. Taste and see that Jehovah is good. In this verse the Psalmist indirectly reproves men for their dulness in not perceiving the goodness of God, which ought to be to them more than matter of simple knowledge. By the word taste he at once shows that they are without taste; and at the same time he assigns the reason of this to be, that they devour the gifts of God without relishing them, or through a vitiated loathing ungratefully conceal them. He, therefore, calls upon them to stir up their senses, and to bring a palate endued with some capacity of tasting, that God’s goodness may become known to them, or rather, be made manifest to them. The words literally rendered are, Taste and see, for the Lord is good; but the particle כי, ki, for, is taken exegetically. David’s meaning, therefore, is, that there is nothing on the part of God to prevent the godly, to whom he particularly speaks in this place, from arriving at the knowledge of his goodness by actual experience. From this it follows, that they also are infected with the common malady of dulness. This doctrine is confirmed by the promise immediately added, Blessed is the man who trusteth in him; for God never disappoints the expectations of those who seek his favour. Our own unbelief is the only impediment which prevents him from satisfying us largely and bountifully with abundance of all good things.
O taste (v. 8)
We associate taste with pleasure and satisfaction. The psalmist here calls for his readers to taste the goodness of God. Matthew Henry says: ‘Let God’s goodness be rolled under the tongue as a sweet morsel.’
34:8 Experiencing God’s goodness anticipates the experience of goodness in Christ (1 Pet. 2:3).
34:8 Taste and see Describes the act of trusting, fearing, and seeking Yahweh (compare note on v. 9).
34:8 taste. The psalmist describes his personal experience of God’s goodness. After tasting God’s goodness in Christ, Peter alludes to this passage (1 Pet. 2:3).
34:8 Taste can mean “judge” in the sense of determine for oneself (Pr 31:18). See most likely carries the same sense in order to reinforce the concept.
 Sproul, R. C. (Ed.). (2005). The Reformation Study Bible: English Standard Version (p. 765). Orlando, FL; Lake Mary, FL: Ligonier Ministries.