Bash/macOS: Getting a variable by its name, inside of a function

In Bash for macOS, I need to be able to pass a string to a function and return the value of a variable named after that string, as well as the string itself. Here's what I have so far, which doesn't work:

varTest="If you can read this, it worked"

function testFunction {
    echo "Variable name is $1"
    echo "Contents are $(${$1})"
}

testFunction varTest
> Variable name is varTest
> Contents are varTest

When actually the second line should say Contents are If you can read this, it worked. In PowerShell it'd be easy:

$varTest="If you can read this, it works"

function testEcho ($string) {
   write-host "Variable name is $string"
   (get-variable $string).value
}

testEcho varTest
> Variable name is varTest
> If you can read this, it works

Does bash have any equivalent to Get-Variable? This will be for Bash (not ZSH) on macOS devices (so v3.2.57).