John 13:10
Jesus replied to him, "The person who has already had a bath is completely clean and does not need to wash anything but his feet. And you disciples are [already] clean [i.e., spiritually], but not every one of you."
1 John 1:7
But, if we live in the light [of righteousness] just like God [constantly] lives in the light [of righteousness], we can truly share a relationship with one another and [can know that] the blood of Jesus, God's Son, continues to cleanse [our spirits] from all of our sins.
1 John 1:9
[But] if we confess our sins [to God], He is faithful [to His promise] and righteous [in His judgment], and will forgive us of those sins and cleanse us from all of our wrongdoing.