They believe in two sacraments: baptism and communion.

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Most Presbyterian churches only hold two sacraments: baptism and the Lord’s Supper. They believe God instituted these two sacraments and that they are a sign of the power of Christ. “Through the Sacraments, God seals believers in redemption, renews their identity as the people of God, and marks them for service,” according to the Presbyterian Mission.

These sacraments connect the church to Christ in that baptism allows for believers to “gain a new identity as followers of Jesus” and communion allows for the “Spirit’s presence in the gifts of bread and cup.” Presbyterians refer to the Lord’s Supper as an act at the Lord’s table, rather than calling it an “altar.”

Also, Presbyterians practice both adult and infant baptism. Infant baptism shows that God chose us, while adult baptism is a way to express faithfulness. Sprinkling is usually the practice for baptism, but some churches believe in baptism by immersion.

christianity.com