Here, 1. David admires God's grace: Great are thy tender mercies, O
Lord! The goodness of God's nature, as it is his glory, so it is the
joy of all the saints. His mercies are tender, for he is full of
compassion; they are many, they are great, a fountain that can never be
exhausted. He is rich in mercy to all that call upon him. David had
spoken of the misery of the wicked (v. 155); but God is good
notwithstanding; there were tender mercies sufficient in God to have
saved them, if they had not "despised the riches of those mercies."
Those that are delivered from the sinner's doom are bound for ever to
own the greatness of God's mercies which delivered them. 2. He begs for
God's grace, reviving quickening grace, according to his judgments,
that is, according to the tenour of the new covenant (that established
rule by which he goes in dispensing that grace) or according to his
manner, his custom or usage, with those that love his name, v. 132.