7. My heart is prepared, O God! (344) Some read fixed, or confirmed, and the Hebrew word נכון, nacon, bears that signification as well as the other. If we adopt it, we must understand David as saying that he had well and duly meditated upon the praises which he was about to offer; that he did not rush into a hurried and perfunctory discharge of this service, as too many are apt to do, but addressed himself to it with steadfast purpose of heart. I prefer, however, the other translation, which bears that he was ready to enter upon the service with all cheerfulness and cordiality. And although, wherever this spirit is really felt, it will lead to steadfastness of religious exercise, it is not without importance that the reader should be apprised of the force of the word which is here employed in the Hebrew. The ready heart is here opposed by David to the mere lip-service of the hypocrite, on the one hand, and to dead or sluggish service, on the other. He addressed himself to this voluntary sacrifice with a sincere fervor of spirit, casting aside sloth, and whatever might prove a hinderance in the duty.
(344) This psalm consists of two parts. The preceding verses, which contain the first part, express deep distress and extreme danger, and are of a plaintive and imploring strain. But here, where the second part commences, there is an elegant transition suddenly made to the language of exultation and triumph, which continues to the close of the psalm.