ISB ~ Matthew 17 v26

the sons are free:The divine sonship shared by Jesus (natural) and Peter (adoptive) exempts them from Temple taxes. Nevertheless, they submit their New Covenant liberty to the regulations of the Old. In the early Church, believers maintained certain Old Covenant practices to avoid giving “offense” (17:27) to the Jews and in the hope of winning some to the gospel (Acts 16:3; 21:17-26; Rom 14:13-21; 1 Cor 9:19-23).