In a sense, our ignorance of the greater aspects of the universe allows for our freedom to choose ... in over-simplified form, if we knew the result of every act we may commit, it would direct our editing of what we would commit. When scriptures says that EVERY knee shall bow and EVERY tongue confess, will freedom to choose to do so or not be in effect?... And would the outcome of choosing wrongly be absolutely knowable for us to know prior to bowing and therefore we would choose not to do that which would/will cause our certain destruction/torment? Or will there be only those knees and tongues left which will choose to bow?
Final Judgment is the term that brings visual images through which one can explain why every knee will bow and every tongue confess: those who believe will kneel and confess in faith, overwhelmed in the presence of God (as we Orthodox do at epiclesis); those who hate God will kneel from fear and confess in hopes of being spared the judgment.