“8 Therefore let us keep the feast, not with old leaven, nor with the leaven of malice and wickedness, but with the unleavened bread of sincerity and truth.”
Being sinless 7 days, the feast of unleavened bread, with “sincerity and truth”, was not a call to abolish this feast; and so Messiah YH’shua would agree. In the quoted scripture above we can see Paul’s effort to bring truth and sincerity back into those who had lost their faith, who had lost their ways, who were called the lost tribes of Israel. May YH’s will be done.