They aren't "Jewish" things. They are "Biblical" things.
Out of love, followers of the Messiah Yeshua do these things to imitate Him and obey Him. (John 14:15).
Q: If you aren't Jewish, why do you do Jewish things?
A: Many of the things G-d commanded in Scripture were explicitly given to Israel but were intended for all peoples who call upon His Name. (See Numbers 15:16, Acts 26:23).
They aren't "Jewish" things. They are "Biblical" things.
Out of love, followers of the Messiah Yeshua do these things to imitate Him and obey Him. (John 14:15).