ego reddere honorem deum meum
Mostly when youre thinking of it, it's present tense while also being future tense as well, could, meaning in the present. For example, "I could do that". More than likely your sentence is in the present
Many have heard it, but nobody has ever seen it. It will not speak back until spoken to. What is it? The answer to the riddle is an echo. Echo is the reflection of the sound that when it is released by the speaker, it arrives back to the speaker (now listener) but is delayed.