They still cling/stick/hold/adhere to their belief.

[Isbell]

Which of the following sounds more natural and common in daily conversation:
They still cling/stick/hold/adhere to their belief.
Any advice/feedback would be greatly appreciated.

[Beeesneees]

Any of them, though 'hold' would benefit from an additional word: hold fast / hold tight

Which I used would depend on the greater context, but if pushed to choose. my natural inclination would be to use 'cling'. There's nothing wrong with the others though.
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Cheers m' dears!

[Isbell]

Then may I follow in your footsteps, :-)
Thanks anyway.