Do you obey the scribes and the Pharisees as the earthly Jesus commanded?
Have you already given away your property as the earthly Jesus commanded?
Do you offer sacrifices as the earthly Jesus commanded?
Do you keep the Sabbath as the earthly Jesus taught us through His example?
Do you keep all the commandments as the earthly Jesus commanded?
Or do you believe salvation is by grace through faith according to the risen Jesus, who spoke to us through Paul?
1. You find no evidence of anything we say! Jesus gave the evidence you need to comprehend in
John 16:12-16 (KJV)
12 I have yet many things to say unto you, but ye cannot bear them now.
13 Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear,
that shall he speak: and he will shew you things to come.
14 He shall glorify me: for he shall receive of mine, and shall shew
it unto you.
15 All things that the Father hath are mine: therefore said I, that he shall take of mine, and shall shew
it unto you.
16 A little while, and ye shall not see me: and again, a little while, and ye shall see me, because I go to the Father.
That is text easy enough for a 3rd grade child to comprehend. That came to pass at Pentecost and beyond through men inspired of the Holy Spirit, as promised.
The inspired men left out keeping the Jewish sabbath since they realized Jesus became our sabbath rest. Sunday was selected as a good day to assemble. There are no requirements for Gentile believers to keep any Jewish observance. That's part of what Jesus promised would be revealed post resurrection.
There is no further need for any blood sacrifice, since the Father accepted that of Jesus once and for all. Jesus didn't command people to go sacrifice, though as a Jew in good standing had to take part in that, else be disqualified and shamed.
Jesus preached to Jews, by that I mean Israelites of various tribes. He could never neglect a single Mosaic commandment while alive in the flesh. He died to the Law and arose free from it. In doing so He left the old Law intact, as that was all the lost House of Israel had left. It couldn't save a soul then, and still can't, even if keeping it all. Keeping the Law was a daily exercise, at best covering one's past sins, but not washing them away. Only the blood of Jesus can do that. Israel rejected Him, chose Barabus the thief. Their spiritual champion has been the thief all along, like the Philistines had Goliath. He died too. All that's left is commentary from those rebellious scribes and Pharisees who helped form a faux religion never laid out by Moses. They should have accepted the destruction of the Temple as a great sign they missed the Messiah. The earlier sign in the Temple was the veil was rent when Jesus died. That was six inches thick of hides and other materials an armor piercing bullet might not have penetrated. Torn in two. By God or angels.
You should believe what Jesus said and trust His appointed recorders who received the latest word from God through the Holy Spirit, as promised to them. None of the NT authors disagreed with each other except the one time Paul corrected Peter over his hypocritical behavior with whichever group he visited with, the Jews or the Gentiles. Since Peter didn't reject the correction it wasn't technically a disagreement, and moved on to eventually commend Paul, though sometimes hard to understand. He admonished that people who wrestle of those words do so to their own destruction. None of the New Testament writers disagreed with what was recorded of Jesus.