A couple verse broken down...
John 6:65 And He was saying, "For this reason I have said to you,..." - so Jesus has said this before "...that no one..." - a double negative that doesn't turn into a positive but more negative the more it is said so no one yet no one yet no one "...can..." - has ability - so no one has ability "...come to Me..." - the destination - so no one has the ability to come to Jesus "...unless..." - the condition, the exception, the necessary thing needed "...it has been granted him..." - so something is granted, something you receive, you are the grantee and then there is a grantor, so what is needed isn't coming from you but from the grantor "...from the Father." - so the grantor is God - so no one has the ability to come to Jesus unless the Father gives or grants something to us But what is "it"? Remember Jesus has said this before. John 6:44 "No one..." - double ne