There is a wonderful Hebrew word called אָמֵן, ‘ʾāmēn’ from which we get our word “amen“. According to Strong’s Concordance it means “Be established, firm”. But it can also mean “Believe” and shows the connection between stability and faith that James talks about in James 1:6-8:
“6 But when you ask, you must believe and not doubt, because the one who doubts is like a wave of the sea, blown and tossed by the wind. 7 That person should not expect to receive anything from the Lord. 8 Such a person is double-minded and unstable in all they do.”
There is a place for being absolutely dogged and firm when it comes to doing and thinking what we believe is right. Faith, in a deep sense, means to stand firm (cf. Ephesians 6).