Assuming you have a list of name equivalents, transform that list into a macro variable which can be inserted in a rename statement:
data names;
length oldName newName $32;
input oldName newName;
datalines;
weight kilos
height inches
age years
name firstName
sex gender
;
proc sql;
select catx("=", oldName, newName) into : rename separated by " "
from names;
quit;
data myClass;
set sashelp.class;
rename &rename;
run;
proc contents data=myClass; run;
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