Here "heaven" is used as a metonym to refer to God. This can be stated in an active form. AT: "God has given it to him" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-activepassive]])
This "You" is plural and refers to all the people John is talking to. AT: "You all" or "All of you" (See: [[rc://en/ta/man/translate/figs-you]] and [[rc://en/ta/man/translate/figs-rpronouns]])
# I have been sent before him
This can be stated in an active form. AT: "God sent me to arrive before him" (See: [[rc://en/ta/man/translate/figs-activepassive]])