Arcana Coelestia # 3184
3184. 'And Abraham's servant and his men' means from the Divine things within the natural man. This is clear from the meaning of 'Abraham's servant' as the natural man, dealt with in 3019, 3020, and from the meaning of 'his men' as all things in the natural man, dealt with in 3169. Their being Divine things within the natural man is evident from the consideration that the servant had been sent by Abraham, who, as shown many times already, represents the Lord's Divine.
Wash
“Washing” in the Bible represents purification - unsurprisingly! Washing dirt from the skin symbolizes using true ideas from the Lord to remove evil desires and false ideas from our minds. This is the reason that washing was such an integral part of ritual; cleaning the body to perform physical acts of worship - something with no actual spiritual value - is symbolic of repenting our evils and falsities as part of worshiping the Lord.