No. Jesus did not abandon any faith, principles, or cause even though in conflict with the leaders of the day who had corrupted the faith with their interpretations.
Mat 5:17-19 KJV Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil. [v. 18] For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled. [v. 19] Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.
2Pe 3:1-4 LITV Beloved, I now write to you this second epistle, in which by reminder I stir up your sincere mind to remember [v. 2] the words having been spoken before by the holy prophets, and the command of the Lord and Savior by us, the apostles; [v. 3] first, knowing this, that during the last days scoffers will come walking according to their own lusts, [v. 4] and saying, Where is the promise of His coming? For from which time the fathers fell asleep, all things remain so from the beginning of creation.
1Ti 4:1-3 LITV But the Spirit expressly says that in latter times some will depart from the faith, cleaving to deceiving spirits and teachings of demons, [v. 2] in lying speakers in hypocrisy, being seared in their own conscience, [v. 3] forbidding to marry, saying to abstain from foods, which God created for partaking with thanksgiving by the believers and those knowing the truth.
1Ti 4:16 Give attention to yourself and to the doctrine; continue in them, for doing this, you will both deliver yourself and those hearing you.