Jesus did not acted falsely. He was God and showed it to his disciples with many miracles.
The apostles gave their lifes for all what they saw and heard from Jesus Christ.
The commandments that Jesus Christ taught were the true commandments of God.
The prophets are one thing y the laws are other thing very different. Jesus Christ remembered to the prophets and the prophets prophesied the coming of Jesus Christ.
Moses and the prophets talked about Jesus Christ. Jesus Christ is God, and the Gospel's Law is the true God's Law.
Moses talked about Jesus Christ and the prophets too. The scriptures says so:
"The LORD thy God will raise up unto thee a Prophet from the midst of thee, of thy brethren, like unto me; unto him ye shall hearken; According to all that thou desiredst of the LORD thy God in Horeb in the day of the assembly, saying, Let me not hear again the voice of the LORD my God, neither let me see this great fire any more, that I die not. And the LORD said unto me, They have well spoken that which they have spoken. I will raise them up a Prophet from among their brethren, like unto thee, and will put my words in his mouth; and he shall speak unto them all that I shall command him. And it shall come to pass, that whosoever will not hearken unto my words which he shall speak in my name, I will require it of him". (Deuteronomy 18:15-19)
"For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor, The mighty God, The everlasting Father, The Prince of Peace. Of the increase of his government and peace there shall be no end, upon the throne of David, and upon his kingdom, to order it, and to establish it with judgment and with justice from henceforth even for ever. The zeal of the LORD of hosts will perform this". (Isaiah 9:6-7)