Jesus never told the disciples to worship on Saturday.
BUT, the Bible tells us to follow Christ's example.
1 Peter 2:21 For even hereunto were ye called: because Christ also suffered for us, leaving us an example, that ye should follow his steps:
2:22 Who did no sin, neither was guile found in his mouth:
ALSO....there is the fact that Jesus Christ NEVER told anyone, to observe Sunday (1st day of the week) in honor of HIS Ressurection day.
We are not Jews.
The 7th day sabbath was not given to the Jews only.
The Bible says that the sabbath was given to 'man'.
2:27 And he said unto them, The sabbath was made for man, and not man for the sabbath:
2:28 Therefore the Son of man is Lord also of the sabbath.
As the 7th day sabbath was created some 2300+ years..BEFORE...there ever was a Jew.