(pseudo-archaic, nonstandard) Yourselves: a plural of the normally archaic pronoun thyself.

Attend to your own defects before presuming to advise others about theirs.

Honorific alternative letter-case form of thyself, sometimes used when referring to God or another important figure who is understood from context.

(archaic, literary, dialectal) yourself (as the object of a verb or preposition or as an intensifier); reflexive case of thou

(also philosophy) Be aware of your own strengths and limitations.

(Yorkshire) thyself.