No; He mentions a few of those contained in the Decalogue, but also a few contained in the Book of the Law
Here are those to which point to the Ten Commandments.
Matt 5:21 Ye have heard that it was said by them of old time, Thou shalt not kill; and whosoever shall kill shall be in danger of the judgment:
Matt 5:27 Ye have heard that it was said by them of old time, Thou shalt not commit adultery:
Here are those to which point to the Book of the Law.
Matt 5:31 It hath been said, Whosoever shall put away his wife, let him give her a writing of divorcement:
Matt 5:33 Again, ye have heard that it hath been said by them of old time, Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths:
Matt 5:38 Ye have heard that it hath been said, An eye for an eye, and a tooth for a tooth:
Matt 5:43 Ye have heard that it hath been said, Thou shalt love thy neighbour, and hate thine enemy.
Depends what you mean by Jewish customs. As seen above many of the laws contained in the Book of the Law (Moses) are still valid. Anything penned that shows us what sin is or prevent us from sinning must be heeded.
However it is more than that. GOD has mandated Laws to protect our physical well being also. Acts 15 prove this.
But that we write unto them, that they abstain from pollutions of idols, and from fornication, and from things strangled, and from blood. For (because) Moses of old time hath in every city them that preach him, being read in the synagogues every sabbath day.
(Act 15:20-21)
A few things should be noted from the above text. First and foremost, the new converts are being commanded to abstain from pollutions of idols, and from fornication, and from things strangled, and from blood.
These Laws are Dietary health and Moral laws from the Book of the Law (Moses) not the Ten Commandments.
Second thing to note is verse 21 starts with the word "for". This word means that what comes after it is the reason for what was previously stated.
In other words according to grammar and context he is saying, let's not over burden them they will get what they need, because Moses (the Book of the Law) is read every Sabbath Day in the synagogues where and when they meet.
If any thing these verses prove they were meeting on and therefore keeping the Sabbath and that some of the Laws from the Book of the Law are still part of a Christian's life through the indwelling Christ.
Don't forget the 'buts' (
But I say unto you.)
Here are the first three you gave:
Mat 5:21-22
(21) Ye have heard that it was said by them of old time, Thou shalt not kill; and whosoever shall kill shall be in danger of the judgment:
(22) But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire.
Mat 5:27-28
(27) Ye have heard that it was said by them of old time, Thou shalt not commit adultery:
(28) But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.
Mat 5:33-34
(33) Again, ye have heard that it hath been said by them of old time, Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths:
(34) But I say unto you, Swear not at all; neither by heaven; for it is God's throne:
Here Jesus is strengthening the law. Below are fifty of Christ's commandments and as far as I can tell, that is the sum total. The commandments of Christ are much harder to keep than the old ones, and they lead to a more harmonious society. What has happened to the other 563 including those that say to stone or otherwise kill? They are GONE.
If anyone professes to be a Christian, then they need to follow Jesus and not Moses. Are you going to play basketball to the rules of baseball? Of course not.
Below are the 50 Commands of Christ and please, let us have no more confusion. Christians follow Jesus and Him alone.
1. Repent—Matthew 4:17, Luke 13:3
2. Let not your heart be troubled—John 14:27,
John 16:33, Matthew 6:25-26, Philippians 4:6-7
3. Follow me—Matthew 4:19
4. Rejoice—Matthew 5:12, (Also 2 Corinthians 6:10,
12:10, James 1:2-4)
5. Let your light shine—Matthew 5:16
6. Honor God’s law—Matthew 5:17-19
7. Be reconciled—Matthew 5:24-25
8. Do not commit adultery—Matthew 5:27-30
9. Keep your word—Matthew 5:33-37
10. Go the second mile—Matthew 5:38-42
11. Love your enemies—Matthew 5:44
12. Be perfect—Matthew 5:48
13. Practice secret disciplines (giving, praying,
fasting)—Matthew 6:1-18
14. Lay up treasures in heaven—Matthew 6:19-21
15. Seek first the kingdom of God—Matthew 6:33
16. Judge not—Matthew 7:1-2
17. Do not throw your pearls to pigs—Matthew 7:6
18. Ask, seek, and knock—Matthew 7:7-8
19. Do unto others—Matthew 7:12
20. Choose the narrow way—Matthew 7:13-14
21. Beware of false prophets—Matthew 7:15
22. Pray for those who spread the word—Matthew
9:37-38
23. Be as shrewd as serpents—Matthew 10:16.
(Also Romans 16:19)
24. Fear God. Do not fear man— Matthew 10:28
(Also Luke 12:4-5)
25. Listen to God’s voice—Matthew 11:15, 13:9,
13:43, Mark 4:23, Luke 14:35, 1 Kings 19:11-13
26.Take my yoke—Matthew 11:29
27. Honor your parents—Matthew 15:4
28. Beware of false teaching—Matthew 16:6, 11-12
29. Deny yourself—Luke 9:23 (Also Matthew 10:38
and Mark 8:34)
30. Do not despise little ones—Matthew 18:10
31. Go to Christians who offend you—Matthew
18:15 (Also Galatians 6:1)
32. Forgive offenders—Matthew 18:21-22 (Also
Proverbs 19:11)
33. Beware of covetousness—Luke 12:15
34. Honor marriage—Matthew 19:6, 19:9
35. Lead by being a servant—Matthew 20:26-28
36. Make the church a house of prayer for all
nations—Mark 11:17
37. Pray in faith—Matthew 21:21-22, John 15:7
38. Bring in the poor—Luke 14:12-14
39. Render unto Caesar—Matthew 22:19-21
40. Love the Lord—Matthew 22:37-38
41. Love your neighbor—Matthew 22:39
42. Be born again—John 3:7
43. Await my return—Matthew 24:42-44
44. Celebrate the Lord’s supper—Matthew 26:26-
45. Watch and pray—Matthew 26:41
46. Keep my commandments—John 14:15
47. Feed my sheep—John 21:15-16
48. Make and baptize disciples—Matthew 28:19
49. Teach disciples to obey—Matthew 28:20
50. Receive God’s power—Luke 24:49
50 Commands of Jesus - Practical Bible study - 15 lessons - What they mean today