12.  We must not think that every believer will attain to the same measure of grace.  There is a measure appointed for every member or joint of this body; and every joint supplieth, according to the effectual working in the measure of every part, Eph. iv. 16.  God hath more ado with some than with others; there is more strength required in an arm or leg than in a finger or toe; and every one should be content with his measure, so far as not to fret or repine against God and his dispensations, that makes them but a finger, and not an arm of the body; and do their duty in their station, fighting against sin, according to the measure or grace dispensed to them of the Lord, and that faithfully and constantly; and not quarrel with God, that he maketh us not as free of temptations and corruptions as some others.  For the captain must not he blamed for commanding some of his soldiers to this post where they never once see the enemy, and others to that post where they must continually fight.  The soldier is here under command, and therefore must be quiet, and take his lot; so must the Christian reverence the Lord’s dispensations, in ordering matters, so as they shall never have one hour’s quietness, while, as others have more rest and peace, and stand at their post fighting, resolving never to yield, but rather to cover the ground with their dead bodies, till the commander-in-chief think good to relieve them.  Sure I am, as the only wise God hath distributed to every member of the body, as he hath thought good, so it is the duty of every member to endeavour this holy submission to him, as to the measure of grace, considered as his free gift bestowed on them; and to be humbled for the grudgings of his heart, because God hath not given him more talents.  And sure I am, though this submission make no great noise in the world; yet really this is one of the highest degrees of grace attainable here, and such an ornament of a meek and quiet spirit, as is in the sight of God of great price.  So that whoever hath attained to this, have the very grace they seem to want, and more.  Yet, lest this should be abused, let me add a word or two of caution, to qualify this submission. (1.) There must be with it a high prizing even of that degree of grace which they want. (2) There must be a panting after grace, as it is God’s image, and a conformity to him, and with so much singleness, as they may be in case to say, without the reproachings of their heart, they do not so much love holiness for heaven, as heaven for holiness. (3.) There must be an unceasingness in using all means, whereby the growth of grace may be promoved to this end, that they may be conformed to his image, rather than that they may be comforted. (4.) There must be also a deep humiliation for the want of that degree of grace they would have, as it importeth the want of so much conformity to him to whose image they are predestinated to be conformed, which will very well consist with this submission we are speaking of.