He kept the Sabbath day many times (Acts 13:14,Acts 13:42-44, Acts 16:13, Acts 17:2, Acts 18:4, Acts 18:11) and he also observed the feasts (Acts 18:21, Acts 20:6, Acts 20:16, Acts 27:9, 1 Corinthians 5:7-8). He circumcised Timotheus in Acts 16:1-3, took a Nazarite vow (Acts 18:18, Acts...