Charles H. Spurgeon on Psalms 56:12

Thy vows are upon me, O God. Vows made in his trouble he does not lightly forget, nor should we. We voluntarily made them, let us cheerfully keep them. All professed Christians are men under vows, but especially those who in hours of dire distress have rededicated themselves unto the Lord. I will render praises unto thee. With heart, and voice, and gift, we should cheerfully extol the God of our salvation. The practice of making solemn vows in times of trouble is to be commended, when it is followed by the far less common custom of fulfilling them when the trouble is over.