The phrase "doeth slow burn" may seem confusing to those not familiar with Old English spelling. The word "doeth" is actually a variant of the modern English word "does," but with the "-eth" ending commonly used in Old English. The pronunciation is similar to "duhth," with a long "u" sound and a soft "th" sound. "Slow" and "burn" are both spelled as they are in modern English, but it's important to note that in Old English, the "o" sound in "slow" would have been pronounced as a long "o" sound.