Contradiction with Matthew 5:37
Encourages clear honesty without oaths or conditions, contrasting with the conditional oath given by the spies in Joshua 2:17.
Matthew 5:37: But let your communication be, Yea, yea; Nay, nay: for whatsoever is more than these cometh of evil.
Contradiction with James 5:12
Advises against swearing oaths, contradicting the spies swearing an oath in Joshua 2:17.
James 5:12: But above all things, my brethren, swear not, neither by heaven, neither by the earth, neither by any other oath: but let your yea be yea; and [your] nay, nay; lest ye fall into condemnation.