James 1:6

1:6 But he must ask in faith without doubting, for the one who doubts is like a wave of the sea, blown and tossed around by the wind.

James 4:8

4:8 Draw near to God and he will draw near to you. Cleanse your hands, you sinners, and make your hearts pure, you double-minded. ¹ 

¹ tn Or “two-minded” (the same description used in 1:8).