I say all this because when I was at BJU I have heard Numbers 6 mentioned in chapels and class as a defense to the teetotalist argument which I can't find in the scripture.
The Nazirite position for abstaining from alcohol is a complete distortion and misuse of scripture. However, it is very popular because apparently few people, including those who claim this argument, seem to read and comprehend the plain wording of Numbers 6. A couple of things about the Nazirite vow:
1.) Must not drink wine or strong drink (v.3)
2.) Must not eat grapes or eat or drink anything produced from grapes including vinegar, grape juice (no communion!), raisins, grape seeds or skins. (v.3-4)
3.) Must not cut their hair and let their hair grow long. (v.5)
4.) Must not go near anyone who is dying, including close family members, and if anyone dies suddenly around you, you must restart the vow - including shaving your head - and making sacrifices. (v.6-12)
5.) Must go to the Tabernacle (which does not exist anymore) to offer sacrifices once your vow is over. (v.13-17)
6.) Must shave your head at the end of the vow and the hair be given as an offering. (v.18-20)
If you are going to be a Nazirite (an Old Testament vow, not commanded or encouraged since Christ has come), you have to do at least the bare minimum described in this passage (v.21), not pick and choose what is convenient for you.
It is strange that a lot of persons who preach that "Christians are supposed to be perpetual Nazirites" allegedly have a high view of scripture ("inerrantists") but grossly twist and misuse what is clearly there and add things to it, such as the idea that Christians are supposed to be Nazirites.