'Haply' in the Bible

Therefore we ought to give the more earnest heed to the things that were heard, lest haply we drift away from them .

Take heed, brethren, lest haply there shall be in any one of you an evil heart of unbelief, in falling away from the living God:

Let us fear therefore, lest haply, a promise being left of entering into his rest, any one of you should seem to have come short of it.