Hebrews 10:35

Cast not away therefore your confidence
The same word is used here, as in ( Hebrews 10:19 ) where it is translated "boldness"; and may design here, as there, an holy boldness in prayer, free from a servile and bashful spirit; and which appears in a liberty of speaking to God, and in a confidence of being heard; prayer itself should not be left off, nor should freedom, boldness, and confidence in it be slackened, or laid aside: or else a profession of faith is intended, which ought to be free and open, bold and courageous, firm and constant; and which ought by no means to be let go and dropped: or the grace of faith in its full assurance, with respect to interest in God, as a covenant God and Father, and in his love; and with respect to interest in Christ, and in his grace, and a right to the glorious inheritance, the better and enduring substance: and this shield of faith is by no means to be cast away; it was reckoned infamous and scandalous in soldiers to lose or cast away their shield; with the Grecians it was a capital crime, and punished with death ^F2; to which the apostle may here allude. There are two sorts of believers, nominal and real; and there are two sorts of faith; an historical one, which may be in persons destitute of the grace of God, and is in devils; and a true and unfeigned one, which has salvation connected with it; the former may be cast away and lost; the latter, though it may be remiss and weak in its exercise, yet it cannot be wholly and finally lost; and this exhortation may be designed as a means of continuing it, and of perseverance in it: the reason urging it follows,

which hath great recompence of reward;
freedom and boldness in prayer has its reward, for such that ask in faith shall have; and so has a firm and constant profession of religion, for he that endures to the end shall be saved; and so has a true and strong faith in Christ; everlasting salvation is connected with it; the reward of the inheritance follows upon it; and this reward is the recompense of God's own grace: and it is a very great one; it is the fruit of great love and grace; yea, it is no other than God himself, who is the exceeding great reward of his people; it is Christ and his glory, and the riches of it; it is a reward exceeding, and beyond all deserts of men, and beyond all thought and expression.