Augustus Toplady wrote this hymn of praise to the Triune God. I don’t have a date of publication, nor do I know of any details other than that I found it in “The Complete Works of Augustus Toplady”.
And mark’d them out for heav’n.
Might live with Him for ever.
That He will never leave us.
Toplady also wrote “Rock of Ages” and “A Debtor to Mercy Alone”.