1 Thessalonians 2:3-6
For our exhortation was not of deceit, nor of uncleanness, nor in guile:…
Some things, if they be tried once, they are tried forever; if we try gold, it will ever be as good as we found it, unless we alter it; as we find it, so it will continue to be. But try the heart of man this day, and come again the next, and you may find it in a different condition; today believing, to morrow unbelieving; today humble, tomorrow proud; today meek, tomorrow passionate; today lively and enlarged, tomorrow dead and straightened; — pure gold today, tomorrow exceeding drossy. As it is with the pulse of sick man, it varies every quarter of an hour, therefore the physician tries his pulse every time he comes, because his disease alters the state of his body: so it is with the distempered condition of man's spirit. God having tried our pulse, the state of our spirit, by crosses, or by mercies, this day, next day He tries us too, and the third day He tries us again, and so keep us in continual trials, because we are continually varying. Our comfort is, that there is a time coming, when God will establish our souls in such a spiritual and heavenly frame, so that He will need to try us no more.
Parallel VersesKJV: For our exhortation was not of deceit, nor of uncleanness, nor in guile: