5:14 And the four living creatures kept saying, "Amen." And the elders fell down and worshiped.

And the four living creatures kept saying "AMEN."

This is acknowledgment by the hightest ranking angels, 'created beings', that the LAMB is absolutely WORTHY!

Why the acknowledgment of creation that the LAMB is worthy of all power, all wisdom, all strength, all honor, all glory, and all blessing? Because it :

You may not accept Jesus Christ as Savior, that is your choice. ALL will acknowledge Him as Lord God, that is GOD'S CHOICE!

And the elders (redeemed representatives) fell down and WORSHIPED!!!!