Final answer:
Lorenzo Ghiberti won the commission for the bronze doors of the Florence baptistery, which were later dubbed the 'Gates of Paradise' by Michelangelo.
Step-by-step explanation:
The commission for the bronze doors of the baptistery of the cathedral in Florence, which were originally planned to depict scenes of the Old Testament and for which the trial piece was the sacrifice of Isaac, was won by Lorenzo Ghiberti. His first set of doors for the northern entrance displayed 28 panels with scenes from the life of Christ among others and took 21 years to complete. The second set of doors, the ones Michelangelo later called the "Gates of Paradise," took another 27 years to fabricate and featured 10 panels depicting scenes from the Old Testament with a use of perspective to create depth. These doors are particularly noted for their intricate framework and stand at the eastern entrance of the Baptistery.