The Lord's Supper
The Lord's Supper was instituted by Christ and is a sacred ordinance which we are commanded to observe in commemoration of Christ and His death. Only sinless and consecrated Christians are eligible to partake of this Supper. See Luke 22: 17-20; 1 Corinthians 1 1:23-33.
On the Sabbath
The observance of the Sabbath was a requirement of Jewish law and as such was not carried over into the Grace Dispensation. Sunday is not the Sabbath but is merely a day set aside to give special attention to the worship of God. Instead of keeping only the Sabbath day holy, we are required in this dispensation to keep every day holy. The Jewish Sabbath is a type of Christ, who is our rest, rather than the day. See Hosea 2:11; Romans 14:5, 6; Colossians 2:16, 17.
Washing the Saint's Feet
Feet washing was instituted by Jesus on the night of the Last Supper and is a New Testament ordinance we are enjoined to observe. Its observance was taught by the apostles and practiced by the early Church. See John 13:4-17; 1 Timothy 5:10.
Tithes and Giving
Tithing is the paying of one tenth of our increase into the treasury of the Church. It began with Abraham, continued under the law and received Christ's approval. Giving differs from and is in addition to tithing. Both are part of God's plan to finance His work on earth. Read Genesis 14:18-20; 28:20-22; Malachi 3:10; Matthew 23:23; Luke 1 1:42; 1 Corinthians 1 6:2; 2 Corinthians 9:6-9; Hebrews 7:1-21.