Confucius is not a prophet in Abrahamic, but a prophet in Ru Jiao, ancient Chinese belief that has been exist since around 2500 B.C, which not a branch of Abrahamic faith.
There were some prophets in Ru Jiao before Confucius, like Fu Xi, Nu Wa (female), Shen Nong, Huang Di, Lei Zhu (female), which what they have taught are documented in Wu Jing book. Then Tang Yao, Yu Shun, Gao Yao, Xia Yu, Yi, Cheng Tang, Yi Yin, Zhong Hui, Yue Ming, Ji Chang, Bo Yi, Shu Qi, Zhou Gong Dan (4th son of Ji Chang),Liu Xia Hui. And the last is Zhi Sheng Kong Zi, who we know as Confucius. What he taught is documented in Si Shu book.
When Confucius was born in 551 B.C, belief and worship method in Chinese society was not organized well. In that time, royal and elite society embraced Ru Jiao, while the other people embraced Ning Jiao that worshiped many gods like the sun god, earth god, etc, also worshiped the spirits of the ancestors.
Then Confusius taught Ru Jiao to people who embraced Ning Jiao, also introduced the right method of worship. He taught them to worship "Tian", that rule and arrange the universe. He also taught them to worship only selected spirit of the ancestors, not random spirit.
However, concept of Tian in Chinese beliefs (Ru Jiao/Confucianism and Taoism) is not same like concept of God in Abrahamic faith. It's based on ancient Chinese cosmology. Tian itself literally means "heaven" or "sky", or interpreted as "the power in heaven". Tian and Di (earth) are "two poles of the three universes" which in the middle is Ren (human).