The former part of this verse speaks of thoughts, the latter of words, but they come all to one; for thoughts are words to God, and words are judged of by the thoughts from which they proceed, so that, 1. The thoughts and words of the wicked, which are, like themselves, wicked, which aim at mischief, and have some ill tendency or other, are an abomination to the Lord; he is displeased at them and will reckon for them. The thoughts of wicked men, for the most part, are such as God hates, and are an offence to him, who not only knows the heart and all that passes and repasses there, but requires the innermost and uppermost place in it. 2. The thoughts and words of the pure, being pure like themselves, clean, honest, and sincere, are pleasant words and pleasant thoughts, well-pleasing to the holy God, who delights in purity. It may be understood both of their devotions to God (the words of their mouth and the meditations of their heart, in prayer and praise, are acceptable to God, Psa 19:14; Psa 69:13) and of their discourses with men, tending to edification. Both are pleasant when they come from a pure, a purified, heart.

The thoughts of the wicked are an abomination to the Lord,.... They are known unto the Lord, who is the searcher of the heart, and a discerner of the thoughts and intents of it; he knows they are vain and sinful, yea, that they are only evil, and that continually, and therefore are hateful and abominable to him; it may be rendered "the thoughts of evil", as by the Targum; or evil thoughts, as the Septuagint, Vulgate Latin, and the Oriental versions; but Aben Ezra interprets as we, the thoughts of a wicked man, which are never otherwise but evil; whereas in a good man, though there are many evil thoughts which are abominable to himself, yet there are some good thoughts, and which are pleasing to the Lord, as follows;

but the words of the pure are pleasant words; that is, unto the Lord; which are the same with their thoughts, and are the effect of them, and so stand opposed to the thoughts of the wicked; these, expressed either in a way of prayer or of praise, are sweet and pleasant, and acceptable unto God through Christ; as likewise their words and discourse in religious conversation, which also minister grace unto the hearer, and are very delightful and pleasing to saints; the words may be supplied thus, "but the thoughts of the pure", of such who are pure in heart, whose hearts are purified by faith in the blood of Christ, are "words of pleasantness", so Gersom; there is a language in thought which is known to a man's self, and by the Lord; there is the meditation or discourse of the heart, and this being about divine and spiritual things is pleasing to God; he hearkens to it, and writes a book of remembrance for them that fear him, and have thought on his name; see Psa 19:14.

are pleasant words--that is, pleasing to God (Pro 8:8-9).