'Reckon' in the Bible

and I beseech you, that, being present, I may not have courage, with the confidence with which I reckon to be bold against certain reckoning us as walking according to the flesh;

The things in presence do ye see? if any one hath trusted in himself to be Christ's, this let him reckon again from himself, that according as he is Christ's, so also we are Christ's;

This one -- let him reckon thus: that such as we are in word, through letters, being absent, such also, being present, we are in deed.

for I reckon that I have been nothing behind the very chiefest apostles,