First of all, I apologize for my wobbly English. I hope the sense I want to transmit will arrive to you.
There were two kinds of nazirite status.
1 - One we may call it as standard, where people did can choose – voluntarily - to dedicate a period to live a nazirite life. In this case they had to observe all the regulations of God’s Law (given by Moses).
2 - Another kind of nazirite status we may call it as special, because was God Himself to appoint some people to became nazirites, even before their birth. As regards this kind of nazirite status it is appropriate to consider the clear God’s approval to the Samson war actions against the Philistines.
Moreover, Samson did what he did only because God gave him an extraordinary strength and power to perform them. Samson himself admitted that he was able to perform those works only by the Lord’s power He gave him (Judges 15:18)
So, Samson did not violate a Nazirite norm (about touching dead bodies), because was God (on a case by case basis) to establish the rules of the special Nazirite status.
In the case 1 the yet expressed vote – by an Israelite woman – did can be cancel by men that had authority on her: her father (if she lived yet in the same roof with him), or her husband (Num 30:1-8).
Remark: If a father/husband have authority to cancel a nazirite vow (even without specificate a reason before God) even more so the individual who was a God’s appointed Nazirite (before his birth) had the possibility to cancel his committment he did not personally undertook.
Objection: ‘Do not Bible say that God ordered Samson did must be a Nazirite for life (Judges 13:7)’?
Answer: No. What God expressed in that occasion was not a peremptory order, but only what God desired Samson were doing and, simultaneously it was also a prophetic expression about the future of that man.
Why we may conclude so? Two factors help us to understand this, one linked to God’s personality, the other linked with the Hebrew text itself.
(a) God does not oblige anyone to serve Him, or to observe His regulations. That’s not God’s style to force Samson (or everyone else) to become (and to remain) Nazirite.
(b) the pivotal Hebrew verbal form that could lead to the (wrong) conclusion that God ordered a Nazirite life for Samson is יהיה. This term comes from the MT conceptual root (הוה > היה) with the meaning of ‘to became’, ‘to came to be’ (not simply ‘to be’, as many again claim, regrettably). Anyway, we may ask ourselves, Has this verbal form (in so-called Qal imperfect) an implied and unavoidable sense of an order, as when God said (for an example) “‘Let there be light’ and there was light” (Gen 1:3; see also 1:6, 14), or in other instances?
To discover the right answer compare, please, this passage (Judges 13:7) with the phraseology of Exo 20:3-4. We read there: “You shall have [יהיה - in so-called Qal imperfect, again] no other gods before me. You shall not make for yourself a carved image, or any likeness of anything that is in heaven above, or that is in the earth beneath, or that is in the water under the earth.” (ESV)
Now, although this passage is included in what traditionally is called “the Ten Commandments story” we have there not a God’s peremptory order toward the Israelites. Or, if the order were enacted, God did not intervene all the instances the Israelites contravened this ‘order’ to assure that this command was performed (so His word had fulfilled). The Hebrew history is full of instances where the Israelites contravened this ‘command’. And God did not oblige the Israelites to observe this norm of Him. This is not His style. He gave them (and us) free will to observe his Law, or not. He did not say (in Genesis’ style wording): “‘Let there be an absence of other gods’ worship’ and there was an absence of other gods’ worship”.
So, it was not an order but a God’s desire. He hoped the Israelites obeyed His word and avoid idolatry. This was a basic requirement – on God’s viewpoint - if the Israelite wanted to remain in friendship with Him (Isa 41:8), but it cannot was a command, or an order (in Genesis’ style).
Consequently, and returning to Samson story, the passage of Judges 13:7 says us that God hoped Samson undertook the commitment of a Nazirite life and (with the use of his omniscience, but without put the screws on Samson) He did foreknowledge the decisions Samson had will take in his future, along with his decision to be Nazirite until the end of his life.
As regards a Samson’s bad boy behaviour (as an user claims he had, “I think it’s safe to make the assumption that Samson is a bit of a rebel”), I remember this guy that the final God’s moral judgment about Samson was reported yet in the Scriptures, about two millennia ago. Indeed, we read in Heb (11:32, 39, 40; 12:1) that Samson is considered by God as a person of faith, worhty to be a suitable model to copy (irrespective of his errors, as however we believers have to consider king David [cited in the same verse 32] and his errors, maybe grosser of Samson’s…).
Tony, I hope these notes will be useful to your research.