myArray=('1' '2' '3' '4' '5')

myFunction ()
{
local -n myList="$1";
echo "${myList[@]}";
}

myFunction myArray

1 2 3 4 5

myArray=('1' '2' '3' '4' '5')
myFunction () { local arr="${1}[@]"; local values=( "${!arr}" ); echo "${values[@]}"; }
# .........................^^^^^^^ ..................^^^^^^^
#               array expansion *as a string*     actual array expansion
myFunction myArray

1 2 3 4 5