# have said with your mouths and carried out with your hands what you said

"have done what you promised to do when you said"

# carry out the vows

"fulfill the vows" or "complete the vows"

# Now fulfill your vows; carry them out

"Very well! If that is what you want to do, then go fulfill your vows and do what you promised to do"

# Now

The word "now" is used to draw attention to the important point that follows.