Comprehend Languages
For the duration, you understand the literal meaning of any language that you hear or see signed. You also understand any written language that you see, but you must be touching the surface on which the words are written. It takes about 1 minute to read one page of text. This spell doesn't decode symbols or secret messages.
Comprehend Languages 5.5e 2024 vs. 5e 2014 edition differences
The 2024 version allows casting as an action or ritual, whereas the 2014 version is only an action. The 2024 version explicitly includes signed languages, while the 2014 version does not. The 2024 version states it doesn't decode symbols or secret messages, whereas the 2014 version specifies it doesn't decode non-language glyphs.