'Doubting' in the Bible

I am a hater of men of doubting mind; but I am a lover of your law.

And Jesus in answer said to them, Truly I say to you, If you have faith, without doubting, not only may you do what has been done to the fig-tree, but even if you say to this mountain, Be taken up and put into the sea, it will be done.

Go down, then, and go with them, doubting nothing, for I have sent them.

And the Spirit gave me orders to go with them, doubting nothing. And these six brothers came with me; and we went into that man's house:

Then let us not be judges of one another any longer: but keep this in mind, that no man is to make it hard for his brother, or give him cause for doubting.

Let him make his request in faith, doubting nothing; for he who has doubt in his heart is like the waves of the sea, which are troubled by the driving of the wind.

But the wisdom which is from heaven is first holy, then gentle, readily giving way in argument, full of peace and mercy and good works, not doubting, not seeming other than it is.