John 13:8-10
Peter said to Him, "[No], you will never wash my feet." Jesus replied to him, "If I do not wash you, you will not be able to participate with me [i.e., as a disciple]."
Romans 14:1
But you should welcome [into your fellowship] the person whose faith is weak, and not argue [with him] over questionable matters.
2 Corinthians 7:1
[So], since we have these promises [See 6:16-18], dear ones, we should purify ourselves from everything that pollutes [our] body and spirit while living lives completely separated [from sin], out of reverence for God.
Hebrews 9:10
since, with foods and drinks and various [ceremonial] washings, they are only outward regulations imposed until the time when everything would be made right [i.e., under the New Agreement].
Hebrews 10:22
we should draw close [to God] with a sincere heart and a fully assured faith, having had our hearts sprinkled from a guilty conscience [See 9:13-14] and having had our bodies washed with clean water [i.e., in our immersion].
James 3:2
For we all make mistakes in many areas [of life]. If anyone does not make a mistake in what he says, he is a perfect person, capable of keeping a tight rein on his whole life also.
1 John 1:7-9
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.
Jude 1:22-23
And you should show pity toward some people because they have doubts [regarding spiritual matters];