Ibn Al-Qayyim described the prostration as the secret of prayer, the greatest pillar, and the seal of the ruku` (bowing). He said all the other actions we did before it were just preludes.
Sujud brings one closer to Allah and raises one’s ranks in Paradise. The Prophet (peace be upon him) said, “Make frequent prostrations before Allah, for you will not make one prostration without raising you a degree because of it, and removing a sin from you, because of it.” (Muslim)
Sheikh Suhaib Webb talks about the wisdom of prostration in Islam and its description in the Old and New Testaments.
Source: Bridges Foundation Youtube Channel.