- Translation of the Bible: Crowther played a significant role in translating the Bible into Yoruba, one of the major languages in Nigeria. He worked on the translation of the New Testament and parts of the Old Testament. His contributions helped bring the Christian scriptures closer to the people of West Africa in their own language.
- Educational Initiatives: Crowther was deeply involved in educational development. He co-founded the famous Fourah Bay College in Freetown, Sierra Leone, which became a leading educational institution in West Africa. He also established several schools in Nigeria, including the famous Abeokuta Grammar School. His efforts helped lay the foundation for modern education in the region.
- Missionary Work: Crowther was ordained as an Anglican priest and dedicated his life to missionary work. He established the Niger Mission in 1857, which aimed to spread Christianity in the Niger River region. He led several expeditions to the interior of Africa and was instrumental in spreading the Christian faith among various ethnic groups.
- Anti-Slavery Advocacy: Crowther was an outspoken critic of the slave trade and slavery. He used his platform and influence to advocate for the abolition of these inhumane practices. His efforts contributed to raising awareness about the horrors of slavery and the need for its eradication.
- Linguistic Contributions: Crowther was a gifted linguist who had a deep understanding of several languages. In addition to his work on Yoruba Bible translation, he also studied other languages, such as Hausa and Nupe. His linguistic contributions helped facilitate communication between different ethnic groups and fostered cross-cultural understanding.
- Leadership in the Church: Crowther rose to become the first African Bishop of the Anglican Church in Nigeria. His leadership and dedication played a crucial role in shaping the development and growth of Christianity in the region. He was deeply respected for his wisdom, integrity, and commitment to the betterment of society.
Overall, Samuel Ajayi Crowther's achievements made a lasting impact on the cultural, educational, religious, and social landscapes of West Africa. He is remembered as a pioneer, an advocate, and a visionary leader who dedicated his life to the upliftment of his people.