cordial in all afflictions;—it will render you most profitable to others;—it will honor God;—without it you will disobey the commands, and lose the most gracious and delightful discoveries of the word of God;—it is also the more reasonable to have your hearts with God, as his is so much on you;—and in heaven where you have so much interest and relation;—besides, there is nothing, but heaven, worth setting your hearts upon. § 3. (1.) Consider, a heart set upon heaven will be one of the most unquestionable evidences of your sincerity, and a clear discovery of a true work of saving grace upon your souls. You are often asking, "How shall we know that we are truly sanctified?" Here you have a sign, infallible, from the mouth of Jesus Christ himself; _where your treasure is, there will your hearts be also_.[304] God is the saint's treasure and happiness; heaven is the place where they must fully enjoy him. A heart therefore set upon heaven, is no more but a heart set upon God; and surely, a heart set upon God through Christ, is the truest evidence of saving grace. When learning will be no proof of grace; when knowledge, duties, gifts, will fail; when arguments from thy tongue, or hand may be confuted; yet then will this from the bent of thy heart prove thee sincere. Take a poor Christian, of a weak understanding, a feeble memory, a stammering tongue; yet his heart is set on God, he hath chosen him for his portion, his thoughts are on eternity, his desires there, he cries out, "O that I were there!" He takes that day for a time of imprisonment, in which he hath not had one refreshing view of eternity; I had rather die in this man's condition, than in the case of him who hath the most eminent gifts, and is most admired for his performances, while his heart is not thus taken up with God. The man that Christ will find out at the last day, and condemn for want of _a wedding-garment_, will be one that wants this frame of heart. The question will not then be how much have you _known_, or _professed_, or _talked_? but, how much have you _loved_, and where was your heart? Christians, as you would have a proof of your title to glory, labor to get your hearts above. If sin and Satan keep not your affections from thence, they will never be able to keep away your persons. [Footnote 304] Matthew vi, 21.