but as conveyed by one we affect; and that we receive a truth and not an error, we owe the obligation to the honesty of the instrument, and not to the strength and clearness of our own judgment. Wrong considerations may give admittance to an unclean, as well as a clean beast into the ark of the soul. That which is contrary to the mind of God, may be entertained, as well as that which is agreeable. It is all one to such that have no respect to God, what they have, as it is all one to a sponge to suck up the foulest water or the sweetest wine, when either is applied to it. (6.) Many that entertain the notions of the will and mind of God, admit them with unsettled and wavering affections. There is a great levity in the heart of man. The Jews that one day applaud our Saviour with hosannahs as their king, vote his crucifixion the next, and use him as a murderer. We begin in the Spirit, and end in the flesh. Our hearts, like lute‑strings, are changed with every change of weather, with every appearance of a temptation; scarce one motion of God in a thousand prevails with us for a settled abode. It is a hard task to make a signature of those truths upon our affections, which will with ease pass current with our understandings; our affections will as soon lose them, as our understandings embrace them. The heart of man is “unstable as water.”[168] Some were willing to rejoice in John’s light, which reflected a lustre on their minds; but not in his heat, which would have conveyed a warmth to their hearts; and the light was pleasing to them but for a season,[169] while their corruptions lay as if they were dead, not when they were awakened. {a105} Truth may be admitted one day, and the next day rejected; as Austin saith of a wicked man, he loves the truth shining, but he hates the truth reproving. This is not to make God, but our own humor, our rule and measure.