⁴ Let perseverance finish its work so that you may be mature^(A) and complete, not lacking anything. ⁵ If any of you lacks wisdom, you should ask God,^(B) who gives generously to all without finding fault, and it will be given to you.^{(C) 6} But when you ask, you must believe and not doubt,^(D) because the one who doubts is like a wave of the sea, blown and tossed by the wind.