Their heart is as fat as grease
Or tallow, a lump of it, fat or grease congealed. That is, the heart of the above proud persons, who abounded in riches, were glutted with the things of this world; had more than heart could wish, and so became proud and haughty: or their hearts were gross, sottish, senseless, and stupid, as persons fat at heart are; or as creatures over fat, which have little or no feeling: so these had no knowledge of the law of God, no sense of their duty, no remorse of conscience for sin; their hearts were hardened, and they past feeling, and given up to a reprobate mind; see ( Isaiah 6:9 Isaiah 6:10 ) ; The Targum is,
``the imagination of their heart is become gross as fat:''the Septuagint is, "curdled like milk"; that is, hardened, as Suidas
F19 interprets it;
[but] I delight in thy law;
after the inward man; as the apostle did, ( Romans 7:22 ) ; as fulfilled in Christ; as in his hands, as King and Lawgiver; as written upon his own heart; and so yielding a ready and cheerful obedience to it; he delighted in reading the law, in meditating on it, and in observing it.
F19 In voce (eturwyh) .