Correction as pointed out by this user:

For anyone wondering about the relatively modern seeming readability and understability of the inscription:

The stone shown in the pictures is the “hunger stone of Tetschen”   and is located in modern day Czechia. It bears several inscriptions, the oldest one being from 1616. However the inscription shown in the second picture, that says “ Wenn du mich siehst dann weine” - “if you see me, cry” is considerably younger and was carved only about 100 years ago in the early 20th century.

The developement stage of the german language around the 1600s would be barely understandable and even only slightly recognizable as german for present day german speakers. Also the spelling would probably be very different, “i” would rather be written as “y” for example.

(Though personally I have to disagree on the “barely understandable” part, German from around 1600 is actually fairly understandable when you read it nowadays)