Then said he, ’I am going to my Father’s; and though with great difficulty I am got hither, yet now I do not repent me of all the trouble I have been… - John Bunyan

[T]he Tempter came in with his delusion, That there was no way for me to know I had faith, but by trying to work some Miracle; urging those Scriptures that seem to look that way, for the enforcing and strengthening his Temptation. Nay, one day as I was betwixt Elstow and Bedford, the temptation was hot upon me, to try if I had Faith, by doing of some Miracle: which Miracle at that time was this, I must say to the Puddles that were in the horse-pads, Be dry; and to the dry places, Be you the Puddles. ...but just as I was about to speak, this thought came into my mind, But go under yonder Hedge and pray first, that God would make you able. But when I had concluded to pray, this came hot upon me, That if I prayed, and came again and tried to do it, and yet did nothing notwithstanding, then be sure I had no Faith, but was a Cast-away and lost. Nay, thought I, if it be so, I will never try... Thus I was tossed betwixt the Devil and my own Ignorance, and so perplexed... that I could not tell what to do.

By these things my Mind was now so turned that it lay like a Horse-leech at the Vein, still crying out, Give give, yea, it was so fixed on Eternity, and on the things about the Kingdom of Heaven (that is, so far as I knew, though as yet... I knew but little); that neither Pleasures, nor Profits, nor Persuasions, nor Threats, could loosen it, or make it let go his Hold. ...it is in very deed a certain Truth, it would then have been as difficult for me to have taken my mind from Heaven to Earth, as I have found it often since to get it again from Earth to Heaven.

See that your cause be good, else Christ will not undertake it.