Contradiction with Proverbs 3:5
Numbers 13:18 encourages human assessment of the land, while Proverbs 3:5 advises trusting in the Lord rather than relying on one's own understanding.
Proverbs 3:5: Trust in the LORD with all thine heart; and lean not unto thine own understanding.
Contradiction with Jeremiah 17:5
Numbers 13:18 focuses on human evaluation of strength, whereas Jeremiah 17:5 curses reliance on human strength and ability.
Jeremiah 17:5: Thus saith the LORD; Cursed [be] the man that trusteth in man, and maketh flesh his arm, and whose heart departeth from the LORD.
Contradiction with Matthew 6:25
Numbers 13:18 considers concerns about sustenance and prosperity, while Matthew 6:25 advises against worrying about earthly needs.
Matthew 6:25: Therefore I say unto you, Take no thought for your life, what ye shall eat, or what ye shall drink; nor yet for your body, what ye shall put on. Is not the life more than meat, and the body than raiment?
Contradiction with Hebrews 11:1
Numbers 13:18 focuses on physical evidence of the land's fruitfulness, which contrasts with Hebrews 11:1 that describes faith as belief in things not seen.
Hebrews 11:1: Now faith is the substance of things hoped for, the evidence of things not seen. [substance: or, ground, or, confidence]
Contradiction with 1 Samuel 16:7
Numbers 13:18 encourages judging by physical appearance, but 1 Samuel 16:7 states that the Lord looks at the heart, not outward appearances.
1 Samuel 16:7: But the LORD said unto Samuel, Look not on his countenance, or on the height of his stature; because I have refused him: for [the LORD seeth] not as man seeth; for man looketh on the outward appearance, but the LORD looketh on the heart. [outward...: Heb. eyes]