Baptism and the Lord's Supper were instituted by the Lord Jesus Christ as the sacraments of the new covenant. Sacraments are signs and seals of the covenant of grace. As signs, the sacraments are "visible words" that represent God's work. As seals, the sacraments are means the Holy Spirit uses in the growth of the spiritual life of believers.
"Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, 20 teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age." - Matthew 28:19-20
In baptism, believers and their children are marked out as disciples of Jesus Christ and members of his visible church. Also, God's grace in the outpouring of the Holy Spirit, the new birth, and the cleansing of sin is represented through the visible means of water applied in the name of the Father, of the Son, and of the Holy Spirit.
Baptism is applied to new believers, who have not been baptized
previously, and to the small children of believers as a sign of God's
covenant promises to be God to us and to our children (Acts 2: 39).
The Lord's Supper
"The cup of blessing that we bless, is it not a participation in the blood of Christ? The bread that we break, is it not a participation in the body of Christ?" - 1 Corinthians 10:16
In the Lord's Supper, Christ invites us to be spiritually nourished by feeding on his body and blood by faith as we partake of the bread and the cup according to His command, example, and promise.
We partake of the Lord's Supper on the last Sunday of each month.