John Gills Exposition of the Bible Commentary - Psalms 39:3
My heart was hot within me ,.... Either with zeal for God; or rather with envy at the prosperity of wicked men, and with impatience at his own afflictions; while I was musing the fire burned ; not the fire of the divine word, while he was meditating upon it, which caused his heart to burn within him; nor the fire of divine love, the coals whereof give a most vehement flame, when the love of God is shed abroad in the heart, and the thoughts of it are directed by the Spirit of God to dwell... read more
Matthew Henry's Complete Commentary - Psalms 39:1-6
David here recollects, and leaves upon record, the workings of his heart under his afflictions; and it is good for us to do so, that what was thought amiss may be amended, and what was well thought of may be improved the next time. I. He remembered the covenants he had made with God to walk circumspectly, and to be very cautious both of what he did and what he said. When at any time we are tempted to sin, and are in danger of falling into it, we must call to mind the solemn vows we have made... read more