What role does tradition have in the Christian faith? Is it equal to Scripture? Some religions say yes, but the Bible says no. All traditions, no matter who preaches them, should be viewed in light of the Scriptures.
There are 4 types of traditions taught in the Bible. The first is Godly traditions. Godly traditions are those set up by God Himself. For example, marriage. Marriage was the first tradition in human history, set up by God on the very first day of human history (Genesis 1:27-28; 2:24; Matthew 19:4-5; Mark 10:6-7). Because this is God's tradition, it cannot be legitimately overturned (Matthew 19:6; Mark 10:9). Other Godly traditions include baptism and communion, both of which were implemented by God. Obviously, Godly traditions are equal with Scripture, but that is because they are Scripture, not because they are traditions.
The second type is apostolic tradition. These are traditions which were taught by the apostles, whether by word or by epistle (2 Thessalonians 2:15). An example would be head coverings in church. In 1 Corinthians 11, Paul speaks about how worship should reflect divinity. Angels have halos to signify their submission to God, and thus women should have head coverings when they preach, signifying their submission to their husbands. This, again, is scriptural, so while it is equal with Scripture, this is because it is Scripture, not because it is tradition.
The third kind is described in Colossians 2:8. The traditions of men are a third kind of tradition. This kind is somewhat neutral in nature. Men are free to create their own traditions. However, these traditions are empty in and of themselves. One example is the ritualistic washing of hands before eating. In Matthew 15, the Pharisees see Jesus' disciples eat without first washing their hands. This irks them, and they complain to Jesus. But He rebukes them, pointing out that they value their traditions more than they value the Scriptures. He didn't even say the tradition is bad, merely that the Pharisees shouldn't elevate man made traditions above God. But not all man made traditions are bad. Others, such as Christmas, can glorify God. Romans 14 speaks about how observance of specific days is a personal choice in one's walk with God. No one can force this choice on another person. On the whole, man made traditions are somewhat neutral. They aren't binding on anyone.
The final kind is not so trivial. It is the doctrines of devils. The Bible uses this phrase only once, speaking of a tradition that denies people the right to marry, and commands the abstinence from certain foods. Obviously, anything that comes from demons should be strongly avoided.
On the whole, all traditions should be interpreted with the light of Scripture. Scripture is far greater than tradition, and so tradition should always take a back seat. Some traditions are prescribed by Scripture, and so are important, but others are not, and thus hold no value on their own.