Contradiction with Matthew 5:44
While Joshua 6:1 leads to the conquest of Jericho, Matthew 5:44, where Jesus tells us to love our enemies, contrasts with the attacking action.
Matthew 5:44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Contradiction with Romans 12:19
In Joshua 6:1, the Israelites prepare for battle as part of God's plan, whereas Romans 12:19 advises individuals not to seek vengeance but leave it to God.
Romans 12:19: Dearly beloved, avenge not yourselves, but [rather] give place unto wrath: for it is written, Vengeance [is] mine; I will repay, saith the Lord.
Contradiction with Exodus 20:13
Joshua 6:1 sets the stage for Jericho's battle, which involves taking lives, while Exodus 20:13 commands not to kill.
Exodus 20:13: Thou shalt not kill.
Contradiction with Matthew 26:52
Joshua 6:1 presents an impending battle, but Matthew 26:52, where Jesus tells Peter to put away his sword, promotes a message against violence.
Matthew 26:52: Thinkest thou that I cannot now pray to my Father, and he shall presently give me more than twelve legions of angels?
Contradiction with Hebrews 12:14
The focus on battle in Joshua 6:1 contrasts with Hebrews 12:14, which encourages pursuing peace with everyone.
Hebrews 12:14: Follow peace with all [men], and holiness, without which no man shall see the Lord: