The name הויה (The Tetragrammaton, the Hebrew word for God which is derived from the verb “to be”) is called such, because He brings into being everything. And the name אלקים (God) is called such, from the forces that He limits with measurement and restriction. And thus, the name הויה represents mercy, while the the name אלקים represents judgement.

And the name אלקים that comes with a pronoun representing Israel teaches about special Divine Providence. And the name אלקים is not found with a singular pronoun, except when it refers to a prophet or a king.