Neither Jesus nor his disciples ever quoted oral Jewish tradition to support their teachings but, rather, appealed to the written Word of God. (Mt 4:4-10; Ro 15:4; 2Ti 3:15-17) Once the Christian congregation was established, observance of the unscriptural Jewish traditions amounted to a “fruitless form of conduct” that Jewish persons had ‘received by tradition from their forefathers [Gr., pa‧tro‧pa‧ra‧do′tou, “given along from fathers”].’ (1Pe 1:18) Upon becoming Christians, those Jews abandoned such traditions. When some false teachers in Colossae urged taking up that form of worship, Paul warned against “the philosophy and empty deception according to the tradition of men.” Evidently he meant, especially, the traditions of Judaism.—Col 2:8, 13-17. 

The “traditions” that are necessary for worship of God that is clean and undefiled were in time included as part of the inspired Scriptures. Hence, the traditions or precepts that were transmitted by Jesus and the apostles and that were vital for life were not left in oral form to be distorted by the passage of time but were accurately recorded in the Bible for the benefit of Christians living at later periods.—Joh 20:30, 31; Re 22:18

Hope this helps:)