God. Hebrew. Elohim (with Art.) = the [true] God. App-4.
one heart. It is to this that Hezekiah refers in his Song of the degrees (Psa_133:1). It is a Psalm of David, selected by Hezekiah because David knew the blessedness of this "unity". See 2Sa_19:9, 2Sa_19:14 and App-67.
by. Some codices, with six early printed editions and Syriac, read "according to".