Psalms 39:1 «To the chief Musician, [even] to Jeduthun, A Psalm of David. » I said, I will take heed to my ways, that I sin not with my tongue: I will keep my mouth with a bridle, while the wicked is before me.
Ver. 1. I said, I will take heed] He resolved so, Psalms 38:13,14, sc. to continue as one deaf and dumb, to use Isaac's apology to scoffing Ishmael, viz. no apology, unless it be that which is real; for vivendo melius arguuntur obtrectatores, quam loquendo, slanderers and railers are best answered by silence. Eiusdem sensus est hic Psalmus cum priori (Kimchi).
That I sin not with my tongue] A hard task, a long lesson, as Pambus, in the Ecclesiastical History, found it by experience; and after many years' trial could not take it out. For the tongue is an unruly member; and "if any man offend not in word, the same is a perfect man, and able also to bridle the whole body," James 3:2. David resolved to temper his tongue, and to keep a bridle or a muzzle for his mouth, while he was in extremity of pain, and in the presence of the wicked, who lay at the catch, and would soon exclaim; but his heart deceived him, for he quickly after brake his word, Psalms 39:3, and made a rash request, Psalms 39:4, so great need is there that the best pray to God to keep the door, as Psalms 141:3 .